House rules

Every rule the marketplace enforces, in plain words. The same rules are settings in the API, so what you read here is what the system does.

Bidding

Every negotiable listing carries a private floor. A bid under it is declined automatically; the seller is never told and it does not count as a round.
Open bids are valid for 48 hours. Up to three counter rounds; after the last one either side accepts or declines.
Only verified companies can bid. One open bid per listing per company; up to 20 bids per hour.
Sellers stay anonymous until acceptance. Buyers see a rating and a deal count, not a name.

One close fee of 1.5% of the goods subtotal, paid by the seller when a deal completes. Minimum $25 per deal. No listing fees, no subscriptions.
The fee is frozen on the deal at acceptance and invoiced with 14-day terms.

Escrow is optional per deal and either party may request it before payment. Stock is reserved for 48 hours after acceptance; an unpaid deal is cancelled and the stock released.
Three expired holds in 90 days suspend the buyer.

UltraEdge sells its own inventory under three published rules: it pays the same fee as every seller, it uses the same floor logic, and it gets no priority in search.
House listings carry the "UltraEdge stock" badge.

Used lots state sale format, functional status and cosmetic grade (A, B, C), and must carry actual lot photos before publishing.
Data-bearing devices state whether data was wiped, drives removed, or a certificate is available.