Contact BidHalf

BidHalf is a small, independent, ad-supported site — there is no support desk standing by, but a real person reads what comes in to support@bidhalf.com.

A few things this address is genuinely useful for: a calculator that gave you a result you think is wrong (say which tool — the maximum bid calculator, auction fee calculator, bid increment table, deal savings calculator, total cost-to-win estimator, or resale profit estimator — and what you entered); a tool you wish existed on the site; an out-of-date fact or broken link in the blog, learn section, or the Auctions & Collecting Museum; or a bug in how a page looks or behaves on your device.

There’s no fixed response time to promise, and no ticket number or live chat — email is read and handled as it comes in. If a question is really about a specific lot, invoice, or dispute, the auction house or marketplace involved will have a more authoritative answer than this site can give; BidHalf’s tools produce general estimates, not official figures, and the site isn’t affiliated with any auction house, marketplace, or reselling platform.

Before writing in about a tool result, it can help to double-check the numbers you entered — a premium percentage, tax rate, shipping cost, or platform fee is the most common source of a surprising answer. If it still looks wrong after that, that’s exactly the kind of message worth sending.