Yes I have had several non-paying buyers and it's an increasing trend. They're only emboldened with eBbay not registering a strike or feedback. The dispute cam also lock you in for a month where you can't resell anyway. I also had one instance whre a person bought, paid through paypal and cancelled the transaction within paypal. As all looked ok I had posted the item and that was the end of the story - out of pocket.

that buyer continued to trade with no reprimand from eBay at all