Stitch costume??

[brockash]

I asked this on the family board as well, but thought I'd try here too. I hope someone can help me out here. My DS is 7, and has finally decided that he wants to be Stitch for the MNSSHP. I've been looking online and can't find any Stitch costumes that would fit a 7 year old. The Disney store doesn't sell them anymore, but when they did, he would need a medium (like a size 7 or 8.) I found one costume on ebay (size 8-10) that I would get, but the guy is asking $68 bucks for it, which seems pretty rediculous to me. Does anyone have any other ideas? Does anyone know if they sell the costume at Disney? -We could always wait and get it there. He already has the head and hands, so we really only need the orange costume part. TIA for any ideas!