Now hilarity of joe's reaction aside, I have to agree that it is ridiculous to charge so much for something as simple as a wepon skin. Yes, granted that this is not required to play the game, and you can probably ignore it forever, but I find it ridiculous something so mundane has a value that is close to a full AAA game.
It's like going to a pizaa place, and they are asking you $2 to sprinkle some parmesan on your pizza