I recently encountered a problem. Sold an excellent base for a very small price by mistake. Instead of 30,000 it turned out in 30 because of problems with the Internet at this moment. The man refused to return the lion according to the rules of lioden. Once I also bought a good breed when its owner accidentally set the wrong price. And I think this is a frequent problem of the market.

My suggestion is to install a two-phase preview on sales. As, for example, in gifts, when there is an opportunity to check and cancel a gift. After the pop-up banner with the "consent" set, "are you sure that you want to put it up for sale?". So a person has time to notice mistakes, price, wrong name etc..