# Free tools

Free tools for auction houses, online auction platforms and government surplus auction programs. You need no account.

- [Auction total-cost calculator](https://auctionfinder.fyi/tools/auction-total-cost.md): Type the hammer price, the buyer's premium, sales tax and shipping to see the real total you pay and the effective premium rate.
- [Buyer's premium comparison](https://auctionfinder.fyi/tools/compare-auction-houses.md): Pick two or three listed houses and compare the buyer's premium, bidding formats and shipping help each publishes.

> **Not financial advice.** auctionfinder.fyi is a directory, not an auctioneer, an appraiser or a financial or legal adviser. A listing is not a recommendation. Buyer's premiums, bidding rules and payment terms come from the source named on each listing and were last checked on the date shown; they change, so confirm them with the house or program before you bid or pay. Beware of auction fraud and shill bidding: never wire money or pay by gift card to a seller you cannot verify, and walk away when a price is run up by a bidder who never buys. To report a mistake, write to hello@auctionfinder.fyi.