I've got one of these for sale. Not sure what they sell for. Shoot me an offer. For the DS, it's a bit outdated. It works well for playing GBA games though. Takes a miniSD card so it can fit lots of GBA games. Comes complete in box with SD reader and USB cable as well.
http://img148.imageshack.us/img148/2081/imag0262.jpg
http://img819.imageshack.us/img819/5479/imag0263k.jpg
http://img148.imageshack.us/img148/2081/imag0262.jpg
http://img819.imageshack.us/img819/5479/imag0263k.jpg
