Some people just look for a way to make some extra cash with minimal effort. It takes no real work to order, receive and ship out a figure, so if you can buy it for $150 and sell it for $300+, you double your money with very little effort. I get the appeal of it, I wish it weren't so, but it is and better to just accept that it exists otherwise you'll tear yourself up wishing it weren't so. With place like eBay and Amazon, it's come to thrive, if such sites weren't around to reach mass ammounts of consumers, it might not be so bad, but places like eBay are huge and people know if they try to turn something for profit, odds are they will find someone willing to pay.