I think when sales disputes happen, a party clearly in the wrong and refusing to make it right should be banned.
For instance, in this thread, at the page of the second page, a buyer claims to have not received his sweater. The seller then indicates the buyer did receive the sweater but reversed the charges through PayPal. The buyer confirms in another thread he received the sweater. There is no indication he has paid.http://www.styleforum.net/showthread...=134215&page=2
Furthermore, buyer is also a seller on SF and to me shouldn't be allowed to do business if that's how he conducts himself.