Guys, this is how reality simply IS. A Thing is Worth What a Person Will Pay For It. People are saying they "Can't" sell them at 90 dollars. Uh, these game copies are the property of Gamestop. They can post them for a million dollars, crush them up and eat them with a spoon, take them to the prom, whatever they want. You can't tell someone else what they may do with their own property. That's called Communism.
Does it annoy me that I can't get a copy for cheap? Yeah. But only in the same way that it annoys me that I can't get laid. I can't go and whine and force girls to make it easier for me to sleep with them, I either get better at the art of gettin' some, or I accept that I can't have what I want. Want Xenoblade Whatevers? Earn 90 dollars in some legal way, or accept that you can't have it.
And here's another thing, relating back to my first point. If nobody buys it at 90 dollars, the price will drop. If everyone does buy it at 90 dollars, they will make more copies and eventually those prices will drop. Either way, you can get what you want with either work or patience. Stomping your feet and saying "It's not fair, I wanted that cookie!" isn't what adults should be doing.