I've got one...McVan's Video Games in Ft. Wayne, IN used to have them for $25 each, new in box. I have Puzzle Bobble Mini for it as well as the Sonic game. I've enjoyed it but really need to get a few more games for it.
Side note: I got my Lynx II there as well, $35 new in box. These would have been purchased probably 4 years ago now, so I figure they no longer have the systems. They did still have tons of boxed and sealed Lynx and Neo Geo Pocket Color games the last time I was there, however.