Which of the following is NOT generally a responsibility of the auctioneer?

The responsibility of determining item value typically falls outside the auctioneer's primary duties. While auctioneers play a significant role in the auction process, their focus is more on conducting the auction itself—bidding, controlling the flow of the auction, and ensuring the rules are followed. Item valuation is usually handled by appraisers or consignors who provide the auctioneer with guidance on the expected values of items being auctioned.

Auctioneers may consider the perceived value during the auction process when setting starting bids and facilitating bidding wars, but they do not generally perform formal appraisals or valuations prior to the auction. The other responsibilities listed, such as setting starting bids, collecting payment from buyers, and facilitating post-auction services, are indeed customary tasks that auctioneers undertake to ensure the successful execution and completion of an auction.