Four and a half years now of people posting "have you tried eBay", when they obviously have never looked there themselves, because if they did they would know that it is almost never listed there, and even when it very rarely is, it's odds on that the seller will not ship it to the Americas.
And four and a half years of posts in this forum saying that GP3-2k cannot be obtained in the Americas, neither from American nor European retailers, nor on eBay, but the same annoyingly "helpfull" advice keeps appearing in his forum as to where to purchase the game.