V-Auction Platform: Complete Bidding Types Guide
Audience: Auctioneers, bidders, and platform administrators Purpose: Comprehensive reference for all bidding types and modes supported by the V-Auction platform
Table of Contents
- Overview
- Auction Styles (How Lots Are Run)
- Online / Timed Auctions
- Live / In-Room Auctions
- Helmsman Auctions
- Helmsman Timed Auctions
- Reverse Auctions (Dutch Auctions)
- Commodity Auctions
- Bidding Methods (How Bids Are Placed)
- Incremental Bidding
- Auto Bidding (Proxy / Max Bidding)
- Buy Now Bids
- Sealed Bids (Blind Bids)
- Lot Modes and Special Settings
- Preview Lots
- Viewing Only Mode
- Buy Now Only Mode
- Sealed Bidding Only Mode
- Shared Features Across All Auction Types
- Reserve Prices
- Overtime / Soft Close
- Pre-Bidding
- Bid Confirmation (Admin Approval)
- Paddle Numbers
- Reserve Temperature Indicator
- Key Differences Summary
- Quick Reference: Which Auction Style to Choose
Overview
The V-Auction platform supports multiple auction styles (which determine how lots progress and end) and multiple bidding methods (which determine how users place bids). These are combined to create different auction experiences.
Auction styles are set at the auction level and apply to all lots in that auction. Bidding methods can be enabled or disabled per lot, and some methods (like Buy Now or Sealed Bidding) can be set as the exclusive method for a given lot.
Auction Styles (How Lots Are Run)
1. Online / Timed Auctions
The standard online auction format.
What it is: Each lot has its own independent closing time. Bidders place incremental bids, and when a lot's timer reaches zero, the highest bidder wins (provided the reserve price is met, if one is set).
When to use it: - General-purpose online auctions - Antique, art, or collectible auctions - Any scenario where items close at staggered times
How it works: - Each lot has a start date and an end date (or inherits them from the auction) - Bidding on a lot is available between its start and end times - Bidders enter a bid amount; if it meets or exceeds the next required increment, the bid is accepted - If the bid is too low, the bidder is told so - When the lot timer expires, the highest active bid wins - If two bidders submit the same amount at exactly the same moment, the bid written to the database first (lowest database ID) wins - this is rare but possible under heavy server load - Lots can be configured with overtime (soft close): if a bid is placed in the final minutes, the closing time is extended to give others a chance to respond
Example scenario: An art auction with 50 lots. Each lot closes 2 minutes apart. Lot 1 closes at 10:00, Lot 2 at 10:02, and so on. Bidders can place bids on any open lot at any time. If someone bids on Lot 1 at 9:59 (one minute before close), the overtime feature may extend Lot 1's closing time by several minutes.
2. Live / In-Room Auctions
Real-time auctioneer-led auctions with simultaneous online participation.
What it is: Lots are presented one at a time, exactly like a traditional in-person auction. An auctioneer controls the pace, moving from one lot to the next. Online bidders can participate in real-time alongside people in the room.
When to use it: - Traditional auction houses running concurrent online and in-person events - Rental equipment auctions - Scenarios where an auctioneer controls the flow
How it works: - The auctioneer (or admin) selects which lot is currently "live" - Only the current live lot accepts incremental bids - The auctioneer advances to the next lot when ready - Past lots are closed; future lots are not yet open for bidding - Bids can come from two sources: - Room bids: Placed by the auctioneer or staff on behalf of people physically present - Web bids: Placed by online users through the platform - When enabled, bid confirmation requires the auctioneer/admin to approve each bid before it becomes active (useful for verifying phone bidders or reading paddle numbers) - Pre-bidding can be enabled, allowing online users to place bids on upcoming lots before they go live - When the auction is finished, all lots are closed and winners are determined
Example scenario: A rental equipment auction with 100 lots. The auctioneer starts with Lot 1, calling out bids. Online bidders see the current lot and can bid in real-time. The auctioneer advances through lots at their own pace. If pre-bidding is enabled, bidders can leave advance bids on lots 50-60 before the auctioneer reaches them.
3. Helmsman Auctions
All-lots-at-once auctions with a shared countdown timer.
What it is: Every lot in the auction shares a single countdown timer. All lots are open for bidding simultaneously, and all lots close at the exact same moment when the countdown reaches zero. Each new bid on any lot resets the countdown, giving everyone more time to respond.
When to use it: - Private coffee auctions - High-value commodity sales where bidders want to compare across lots - Scenarios where fairness demands all lots remain open until bidding truly stops
How it works: - All lots are visible and open for bidding at once (typically displayed in a tabular layout) - The admin starts the auction; initially there is no countdown - bidding is open-ended - Once the admin is satisfied that bidding is active (e.g., most lots have received at least one bid), they start the countdown - The countdown is typically short (e.g., 3 minutes / 180 seconds) - Every bid on any lot resets the countdown back to the full duration - This continues until no bids are placed during a full countdown period - then the auction ends - The admin can pause the countdown (e.g., to address a technical issue), which freezes the remaining time - When unpaused, the countdown resumes with the time that was left - The admin can stop the countdown entirely and restart it later - Auto bidding is available (unlike Live auctions) - The admin can finish the auction manually once the countdown has expired - After finishing, winners are determined and notifications are sent
Example scenario: A private green coffee auction with 20 lots from different farms. All lots are displayed on one page. Bidding opens at 2:00 PM. After 30 minutes, the admin sees that 18 of 20 lots have bids and starts the 3-minute countdown. A bid on Lot 5 at 2:32 resets the timer to 3:00. A bid on Lot 12 at 2:34 resets it again. At 2:41, no bids come in during the final countdown and the auction ends.
Key admin controls: | Action | Effect | |--------|--------| | Start Bidding | Opens bidding (removes pause) | | Pause Bidding | Freezes the auction; saves remaining countdown time | | Start Countdown | Begins or restarts the countdown timer | | Stop Countdown | Stops the timer without ending the auction | | Finish Bidding | Ends the auction when countdown has expired; determines winners | | Swap Increments | Swaps primary and secondary bid increments (if configured) | | Change Countdown | Adjusts the countdown duration (minimum 10 seconds) |
4. Helmsman Timed Auctions
A variant of Helmsman where lots retain individual end dates tied to the auction deadline.
What it is: Similar to Helmsman auctions in that lots are displayed together, but each lot closes at the auction's scheduled end time rather than being controlled by a dynamic countdown.
When to use it: - When you want the unified display of Helmsman but with predictable, fixed closing times - [NEEDS REVIEW: Exact behavioral differences from standard Helmsman may vary by client configuration]
How it works: - All lots are displayed together (like Helmsman) - Lots close when the auction's end date is reached - Does not use the dynamic countdown-extension mechanism of standard Helmsman
5. Reverse Auctions (Dutch Auctions)
Price-decreasing auctions where the first bidder wins.
What it is: Instead of the price going up, the price starts high and drops over time at regular intervals. The first bidder to accept the current price wins the lot.
When to use it: - Commodities where the seller wants a quick sale - Perishable goods - Situations where speed of sale is more important than maximum price
How it works: - The lot starts at a high price - At regular intervals (configured as the "drop interval"), the price decreases - Bidders watch the price fall and click "Buy Now" when it reaches an acceptable level - The first bidder to click wins - no competing against other bidders - The auction stops for that lot once someone buys it - If the price reaches the bottom without a buyer, the lot may transition to sealed bidding only mode (if configured), allowing buyers to make offers - Reserve prices can still apply - if the winning price is below reserve, the lot may be marked as "high bidder" rather than sold
Example scenario: A lot of 500 bags of coffee starts at $5.00/lb. Every 5 minutes, the price drops by $0.10. At $3.80/lb, a bidder clicks "Buy Now" and wins the entire lot at that price.
6. Commodity Auctions
A hybrid between Live and Helmsman - one lot at a time with shared countdown mechanics.
What it is: Commodity auctions combine the one-lot-at-a-time flow of Live auctions with the countdown-extension mechanics of Helmsman auctions. The auctioneer advances through lots sequentially, but a shared countdown timer creates urgency.
When to use it: - Commodity sales that benefit from both sequential presentation and countdown pressure - [NEEDS REVIEW: Specific use cases may vary by client]
How it works: - One lot is "live" at a time (like Live auctions) - The auctioneer advances from lot to lot - A Helmsman-style countdown timer applies to the current lot - Bids on the current lot can reset/extend the countdown - Pre-bidding is available on upcoming lots - Bid confirmation can be enabled for the current live lot - When all lots have been presented, the auction is finished
Example scenario: A specialty coffee auction where lots are presented one at a time, but the auctioneer wants countdown pressure. Lot 1 is presented; the countdown starts. If no bids come in during the countdown, the auctioneer moves to Lot 2. If bids do come in, the countdown resets, creating competitive urgency.
Bidding Methods (How Bids Are Placed)
Incremental Bidding
The standard bid-by-bid approach.
Bidders enter a specific bid amount. The system validates that the bid meets the minimum increment above the current bid (or the opening bid if no bids have been placed). If the bid is too low, the bidder is notified. If valid, the bid is recorded and the current price is updated.
Incremental bidding is available on: - Online/Timed auctions (all lots) - Live auctions (current live lot only) - Helmsman auctions (all lots during active bidding) - Commodity auctions (current live lot, plus pre-bidding on upcoming lots)
Incremental bidding is not available on: - Sealed Bidding Only lots - Buy Now Only lots - Reverse auctions (these use Buy Only mechanism instead) - Live/Commodity auctions on lots that are not the current lot (unless pre-bidding is enabled)
Auto Bidding (Proxy / Max Bidding)
Set it and forget it bidding.
What it is: A bidder sets the maximum amount they are willing to pay for a lot. The system then automatically places incremental bids on their behalf, only as much as needed to keep them in the lead.
When to use it: - When you know your maximum budget but don't want to monitor the auction constantly - When you want to avoid being outbid in the final seconds - When you want competitive advantage without constant manual bidding
How it works: 1. A bidder enters their maximum bid (e.g., $100) 2. The system places the minimum incremental bid to make them the highest bidder (e.g., $1 if the opening bid is $1) 3. If another bidder places a higher bid (e.g., $50), the system automatically bids on the auto-bidder's behalf at the next increment (e.g., $51) 4. This continues until either: - The auto-bidder's maximum is reached, or - No other bidder exceeds the auto-bid 5. The auto-bidder always wins ties - if another bidder bids exactly the auto-bid maximum, the auto-bid wins
Example scenario: - John sets an auto bid of $100 on a lot (system places a $1 bid) - Alan places an incremental bid of $50 - John's auto bid is triggered, placing a $51 bid - John remains the highest bidder - If Alan then bids $100, John's auto bid places a $100 bid first and wins the tie
Important rules: - Auto bidding is not available on Live or Commodity auctions (these require real-time interaction) - Auto bidding is not available on Reverse auctions - Auto bidding is not available when the auction is paused - Auto bidding is not available on Sealed Bidding Only lots - A bidder can retract their auto bid at any time by setting it to the current bid amount
Buy Now Bids
Instant purchase at a fixed price.
What it is: A lot is listed with a "Buy Now" price. Any approved bidder can instantly purchase the lot at that price, ending all other bidding immediately.
When to use it: - When the seller has a minimum acceptable price and wants a quick sale - Alongside regular incremental bidding to give bidders a "take it now" option - On reverse auctions as the primary purchase mechanism
How it works: - A Buy Now price is set on the lot (can be alongside incremental bidding) - Bidders can click "Buy Now" to instantly purchase at that price - The first Buy Now bid wins - if two users click at the same time, only the first recorded bid counts - Once a Buy Now is successful, all other bidding on that lot stops - Buy Now is only available after the lot's bidding has started - Buy Now is not available on Live or Commodity auctions - Buy Now is not available during pre-bidding periods
Buy Now Only Mode: A lot can be set to "Buy Now Only," which disables all incremental bidding and makes Buy Now the sole purchasing method.
Sealed Bids (Blind Bids)
Secret bids where no one sees what others have offered.
What it is: Bidders submit their bids privately. No bidder can see what others have bid, and bids are not cross-validated (one bidder can bid $100 while another bids $10, and neither is told their bid is too low). The auctioneer/admin reviews all sealed bids and decides the winner.
When to use it: - When you want bidders to submit their best offer without knowing competitors' prices - When the seller wants full discretion in choosing the winner (not just the highest bid) - Some clients treat sealed bids as "pledges" where every bidder pays their entered amount - Commonly used for specialty coffee lots
How it works: - The lot is set to "Sealed Bidding Only" mode - Bidders submit their bids privately - Bidders may also specify a number of boxes (quantity) they want to purchase - this is specific to sealed bidding - No cross-validation: each bid is independent - When bidding closes, the admin reviews all sealed bids - The admin manually selects the winner(s) through the admin interface - Winning bidders are notified via email - On some client sites, there are admin buttons to formally accept bids and trigger email notifications - On other client sites, sealed bids are handled entirely manually outside the platform
Sealed Bidding on Reverse Auctions: When a reverse auction lot finishes without a buyer (price drops to the bottom), it may transition to sealed bidding mode, allowing bidders to submit offers after the price-drop phase ends.
Lot Modes and Special Settings
Preview Lots
Test or showcase lots that look real but don't result in actual sales.
What it is: A preview lot appears in the auction like a normal lot but has payment disabled. It's used for testing, demonstrations, or showcasing items that are not actually for sale.
How it works: - The lot displays normally with descriptions, images, and (optionally) bid history - Payment is disabled for the lot - Final sale price visibility is controlled by site settings (can show or hide results) - The lot can be used to let users practice bidding without financial commitment
When to use it: - Before a major auction to let users test the platform - Practice auctions linked to a main auction - Showcasing items that are display-only
Viewing Only Mode
A lot that can be browsed but not bid on.
What it is: When a lot is set to "Viewing Only," the bidding form is completely hidden. Users can see the lot details, images, and (if configured) final sale prices, but cannot place any bids.
How it works: - The lot appears in the auction normally - No bidding form is shown - Bidding is effectively disabled - Payment is disabled
When to use it: - Lots that have been sold outside the platform but need to remain in the auction listing - Display-only items - When an auctioneer wants to show items that are not available for bidding
Buy Now Only Mode
A lot where the only way to purchase is via Buy Now.
What it is: Incremental bidding is completely disabled. The only way to acquire the lot is to click "Buy Now" at the listed price.
How it works: - No incremental bids are accepted - The Buy Now button is the only purchasing option - The first bidder to click Buy Now wins - Price information is visible to bidders
When to use it: - Fixed-price sales - When the seller has a firm price and will not accept lower offers - Reverse auctions (these are inherently Buy Now Only)
Sealed Bidding Only Mode
A lot where the only way to bid is through sealed (blind) bids.
What it is: Incremental bidding and auto bidding are disabled. The only way to participate is to submit a sealed bid.
How it works: - No incremental bids are accepted - No auto bidding is available - Bidders submit sealed bids with an amount and optionally a number of boxes - The admin reviews and selects winners after bidding closes - Price information is hidden from bidders
When to use it: - Specialty sales where the seller wants full control over winner selection - Coffee auctions where sealed bids are the traditional method - Lots where competitive transparency is not desired
Shared Features Across All Auction Types
Reserve Prices
A minimum price below which the lot will not be sold.
- Each lot can have a reserve price set by the auctioneer
- If the highest bid is below the reserve, the lot is marked as "below reserve"
- Bidders below reserve typically see a message like "Still available, Please Make an Offer"
- The reserve can be active or inactive per lot
- In Helmsman auctions, after the auction finishes, the admin can retroactively deactivate a reserve, which changes the winner details from "High bidder" to the bidder's company name
- The reserve temperature indicator (if enabled) shows bidders how close the current bid is to the reserve using an obfuscated visual indicator (a sigmoid curve with random shift, so the exact reserve is not revealed)
Overtime / Soft Close
Automatic time extension when bids come in near the end.
- Configured per lot with an "overtime period" (e.g., the last 10 minutes)
- If a bid is placed during the overtime period, the lot's end time is extended
- On Online auctions, this happens per-lot independently
- On Helmsman auctions, a bid on any lot extends the shared countdown for all lots
- On Commodity auctions, a bid on the current live lot extends the shared countdown
- The extension duration is set by the "overtime period" or "helmsman extend bidding seconds" setting (default: 180 seconds)
Pre-Bidding
Bidding before the main auction starts.
- Available on Live, Helmsman, and Commodity auction styles
- The auction has a pre-bidding start and end date
- During the pre-bidding window, bidders can place incremental bids on lots
- On Live/Commodity auctions: pre-bidding is available on lots that haven't gone live yet
- On Helmsman auctions: pre-bidding is available before the main countdown starts
- When pre-bidding ends, the main auction phase begins
Bid Confirmation (Admin Approval)
Requiring admin approval for bids to become active.
- Available on Live and Commodity auctions
- When enabled (
adminMustConfirmLiveLotBids), bids placed on the current live lot are not active until confirmed by the admin - This is useful when the auctioneer needs to verify phone bidders or read paddle numbers
- Admin can confirm, un-confirm, or delete bids from the auction control panel
- Admin bids (from room operators) are automatically confirmed
- Inactive bids do not count toward the current price
Paddle Numbers
Physical auction paddle identifiers for in-room bidders.
- Used on auction styles that support them: Helmsman, Helmsman Timed, Reverse, and Commodity
- Each registered bidder is assigned a paddle number
- Bids display the paddle number alongside the bidder's information
- Helps auctioneers identify who placed which bid in a room setting
- Not used on standard Online/Timed or Live auctions
Reserve Temperature Indicator
A visual gauge showing how close the current bid is to the reserve price.
- When enabled, bidders see a "temperature" meter (0-100%)
- The display is intentionally obfuscated using a sigmoid curve with a random shift factor
- This gives bidders a sense of progress without revealing the exact reserve
- The temperature reaches 100% when the current bid meets or exceeds the reserve
- If no reserve is set or the reserve is 0, temperature shows 100%
Key Differences Summary
| Feature | Online/Timed | Live/In-Room | Helmsman | Helmsman Timed | Reverse | Commodity |
|---|---|---|---|---|---|---|
| Lots open simultaneously | Yes | No (one at a time) | Yes | Yes | Yes | No (one at a time) |
| Shared countdown | No | No | Yes | No | No | Yes (current lot) |
| Bid extends timer | Yes (per lot) | No | Yes (all lots) | No | No | Yes (shared) |
| Auto bidding | Yes | No | Yes | Yes | No | No |
| Buy Now | Yes | No | No | No | Yes (primary) | No |
| Sealed Bidding | Yes | No | Yes | Yes | Yes (after drop) | No |
| Pre-bidding | No | Yes | Yes | Yes | No | Yes |
| Paddle numbers | No | No | Yes | Yes | Yes | Yes |
| Admin bid confirm | No | Yes (optional) | No | No | No | Yes (optional) |
| Room vs Web bids | No | Yes | No | No | No | Yes |
| Price goes up | Yes | Yes | Yes | Yes | No (goes down) | Yes |
Quick Reference: Which Auction Style to Choose
| If you need... | Choose... |
|---|---|
| Standard online auction with independent lot closing times | Online/Timed |
| An auctioneer presenting lots one at a time with online bidders | Live/In-Room |
| All lots open at once with a shared countdown that resets on every bid | Helmsman |
| All lots displayed together but closing at a fixed time | Helmsman Timed |
| Price-decreasing auction where the first buyer wins | Reverse |
| Sequential lots with countdown pressure and pre-bidding | Commodity |
Glossary
| Term | Definition |
|---|---|
| Lot | An individual item or group of items up for auction |
| Increment | The minimum amount by which a bid must exceed the current bid |
| Reserve | The minimum price the seller will accept |
| Opening Bid | The starting price for a lot |
| Auto Bid / Proxy Bid | A maximum bid where the system bids incrementally on your behalf |
| Buy Now | Instant purchase at a fixed price |
| Sealed Bid | A private bid that other bidders cannot see |
| Overtime | Automatic time extension when bids are placed near closing |
| Pre-Bidding | Bidding allowed before the main auction phase begins |
| Paddle Number | An identifier assigned to bidders in auctions that use them |
| Current Live Lot | The lot currently being auctioned in a Live or Commodity auction |
| Room Bid | A bid placed by the auctioneer/staff on behalf of an in-room bidder |
| Web Bid | A bid placed directly by an online user |
| Below Reserve | When the highest bid has not met the reserve price |
| Helmsman Extend Seconds | The number of seconds the countdown is reset to after each bid in a Helmsman auction (default: 180) |
Document generated from platform source code analysis. [NEEDS REVIEW] tags indicate areas where client-specific variations may exist or where additional verification against live systems is recommended.