Auction House

Auction House

The Auction House (AH) is Bazaar’s item marketplace. It supports both Buy-It-Now listings and timed auctions, and any number of AH channels can run in parallel. Each channel can use its own currency, fee schedule, and item filter — making it easy to run a standard market alongside a premium one.

Open the default AH with /ah. Other channels use their own command (e.g. /premium, /gc) defined by the server.

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Listing Types

GTS and AH share the same sell flow UI but offer two distinct listing types:

Type	How it works
Buy-It-Now (BIN)	Fixed price. First buyer to click pays and the item transfers immediately.
Auction	Timed bidding. Players bid above the current price; the highest bidder at expiry wins.

Both types coexist in the same browse GUI. The listing badge (BIN or Auction) and time remaining are visible on every listing card.

Server owners can disable AH auctions entirely in config.conf:

auctions {
  auctionHouse = false
}

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Auction Semantics

Auctions introduce a few mechanics worth understanding before you list or bid.

Starting bid and increments The seller sets a starting bid. Every subsequent bid must be at least minBidIncrementPercent above the current bid (default 5%). If the current bid is 1,000 coins, the next valid bid is at least 1,050.

Automatic outbid refunds When you are outbid, your currency is refunded to your collection box immediately — you don’t need to claim it manually, and it doesn’t lock up while the auction continues. See /bazaar/core-systems/collection-box/ for details.

Bid history Every bid is recorded. Open a listing’s detail view to see the full bid history: bidder names, amounts, and timestamps.

Auction end When time expires, the highest bidder wins. The item goes to their collection box; the seller receives the final bid amount minus any applicable tax.

Optional auction buyout Auction listings can also define an optional instant-buy price. If a buyer uses that auction BIN, the listing resolves immediately without waiting for the timer to expire.

Anti-Snipe

Bazaar includes an anti-snipe rule to prevent last-second bid sniping. If a bid lands within the last antiSnipeMinutes of an auction (default 2 minutes), the auction end time is extended by that same amount. This gives all other bidders a fair chance to respond. Set antiSnipeMinutes to 0 in config.conf to disable anti-snipe entirely.

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Buy-It-Now

BIN listings behave like a shop: one buyer pays the exact listed price and the item transfers immediately. There is no bidding, no waiting for an end time, and no partial fills. The sell flow is identical to an auction — just leave the BIN toggle selected at the confirm screen.

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The Sell Flow

Run /ah sell or click the Sell button in the browse GUI to start listing an item.

1. Source picker — choose Inventory or Ender Chest as the source. Toggle Multisell here to re-open the picker after each successful listing instead of closing the GUI.
2. Item picker — a paginated grid of items from the chosen source, with full native tooltips.
3. Price input — an anvil GUI. Type your asking price. Preset buttons in the bottom inventory row suggest prices based on your recent sales for that item.
4. Confirm — toggle BIN vs. auction, optionally set an auction buyout, and cycle the listing duration. A SHA-256 checksum confirms the item is unchanged since you picked it.
5. Posted — the listing goes live. If Multisell was on, the source picker reopens; otherwise the GUI closes.

From the command line:

/ah sell <price>
/ah sell <price> confirm
/<channel> sell <price>

Replace <channel> with the channel’s command (e.g. /premium sell <price>).

Auctions are GUI-only

The sell command only posts BIN listings. To list an item as an auction, or to set an optional auction buyout, open the browse GUI, click Sell, pick the item, and use the confirm screen. GTS auctions do have a command-line form (/gts sell <slot> <price> auction); the AH does not.

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Per-Channel Currency and Filters

Each AH channel is fully independent:

• Currency — channels can use different Impactor currency IDs (Pokedollars, Prisms, custom tokens)
• Item filter — whitelist or blacklist specific item IDs, item tags, or data components
• Fee schedule — listing fee and transaction tax can be set per channel
• GUI — channels can have custom browse, detail, and sell GUIs

This makes it easy to, for example, keep netherite gear exclusive to a premium channel that charges a higher tax and requires a special permission node.

For full channel configuration including HOCON examples and item filter rules, see /bazaar/features/channels/.

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Related

• Commands — full syntax reference for /ah, channel commands, and admin commands
• Auction House Channels — how to configure channels, currencies, item filters, and per-channel GUIs
• Collection Box — where purchased items, bid refunds, and sale proceeds are delivered