Not sure if I'm missing something here... I've read this thread over a few times... I see a lot of reports about scammers getting their product for free, but the sellers - for the most part - have been protected by eBay / Paypal. Sure there were a couple posts about sellers "getting scammed out of" an expensive set, but the posters didn't elaborate much on who paid the bill. And yes, some have posted that it took a couple phone calls, and " an hour" of their precious time to get their money back from Paypal... my violin plays for you. But until you've been ripped off selling on Amazon (like I have), most of your stories look like a "win" to me.
Sure we love our precious Lego sets, and hate it when a scammer gets them for free, but it hurts a lot less when Paypal pays the bill. I sold 18 valuable sets (over US$100) on Amazon during the holiday season, and was scammed on 2 of them. That percentage loss is way to high for me. Amazon took my money, sided with the buyers, and ruined my selling metrics, despite my following every rule in Amazon's book. After much effort, I was able to (arbitrarily) get one of them reversed, but still lost the other. And by "reversed" I mean I got my money back, but am still carrying the black mark on my metrics.
Since then I've stopped selling high dollar items on Amazon. My eBay account had been asleep for months, but In the past six weeks, I've sold 19 items on eBay, (range $20 - $500, avg. about $150 each). If the shipping screen says "eligible for seller protection", I box it up and ship it out immediately, and have never rested easier. If I had sold these items on Amazon, I might have made 5 or 10% more on each sale, but all it takes is one Amazon "buyer" to claim the Town Hall I sent them was fake, and I'm out $400, and (potentially) get my Amazon account shut down for life. For me, the best place to sell is is eBay (I've never tried selling on BL).