So this weekend, I got excited because I saw a cheap cartridge for Mario & Luigi Superstar Saga. Upon closer inspection, turns out it's a demo copy. The front says "Not For Resale", and the back has a sticker that says "Demo GPK Only, Property of Nintendo". I got it anyway, since it was cheap and pretty odd, but I can't find much info on what it might be worth. Nothing on eBay at all. Anybody here deal in GBA demo carts?