I once had an english seller ask for more money after he'd already shipped the game.
I told him paypal handled the currency conversion and to take it up with them.
There was inexplicably an english pound IN the game box.
So not only did he fail to extort me for the 5 GBP extra he wanted, he lost an additional one on the sale.
I've been more careful with purchases since. Did buy one out of Japan, but that was a collectors item, and the seller wrapped it BEAUTIFULLY.
Ebay always had a wiff of less than legit, but nowadays they are a joke. I don't like patronizing amazon, but it feels safer.