What must auctioneers disclose to bidders when bidding on their own items?

When auctioneers bid on their own items, they are required to disclose any conflicts of interest related to those items to ensure transparency and maintain the integrity of the auction process. This disclosure helps to ensure that bidders are fully aware of the auctioneer's potential motivations and interests in the sale, which allows bidders to make informed decisions. By understanding these conflicts, bidders can assess the situation more accurately and can be more confident in their bidding choices.

While starting price changes, estimated selling prices, and auction formats are relevant pieces of information that may affect bidders, the explicit requirement to disclose conflicts of interest is fundamental to ethical practices in auctions. Ensuring full disclosure in situations where the auctioneer has a vested interest is vital for fostering trust and fairness in the auction marketplace.