1. I was just wondering when your item is sold but the buyer doesn't pay after a week, should I open an "unpaid" case against the buyer? 2. What benefit does a seller gain from opening an unpaid case against a buyer other than getting a credit on the final value fee (listing fee was free so that's not an issue)? 3. I read on ebay's page that if the buyer doesn't pay even after an unpaid case is opened against them, then the buyer's account is marked with an unpaid strike. What exactly does that do to the buyer? Does that put the buyer at risk from not being able to buy on ebay anymore or risk them from having a suspension/ban like sellers get when they get a strike? 4. Also, if I open an unpaid case against a buyer, can the buyer still leave feedback (pos. or neg.)? What if the buyer pays after I opened the case on them, can they still decide to leave me negative for opening a case on them? (some people might consider it upsetting that a case was opened, then they will pay for it, but hold the grudge and later leave you negative just for the hell of it)? 5. For fear of retaliation for opening a case on them for unpaid item, is there a way to block that buyer from coming back and buying another item (cheap) just to leave me a negative for being upset that I opened a case on them the first time? Thanks.