Honest question that really confuses me based on my observations of how ebay system works. It seems that buyers can open up a case and claim they did not receive the item and request/demand for a refund. The only way a seller can be 100% protected from losing an open case is to provide full tracking number that shows the item was SUCCESSFULLY DELIVERED. Once it shows that status, it gives you immunity from a "item not received" case, (of course they can open a claim that is "item not as described" and that's another story). So then, isn't there a gaping loophole in the ebay system for buyers to scam sellers which is: simply buy whatever you want from sellers you know that don't ship with tracking (ie, pretty much all the chinese sellers), and then after 30 days or so, just open up a case and claim you didn't receive it even though you did, because those sellers wouldn't be able to provide any tracking and ebay will decide the case in your favor 100% of the time so you'd end up with item PLUS your moneyback. Mind you, this is just an observation I noticed as a seller and it seems like this is what buyers could simply do and get away with it? Is there some sort of tracking system on ebay to watch out for buyers who have a history of opening many cases claiming item not received or can you do this unlimited amount of times without any way ebay can redflag a buyer that claims so many non-received items? I haven't seen anything that penalizes buyers if they open up too many non-received item cases. Does anyone know if I'm correct or can you correct me? Thanks.