I got my Pocket Reversi for $20 from Toys'n'Joys last Winter. It was one of their last English versions, though, because someone who ordered like a week after me got the Japanese version.
I don't have it any more, though. I traded it last month since...well...it's a totally crappy game. I mean, othello/reversi is a fun enough game, but the AI in Pocket Reversi is set way too high. I managed to beat the 12-year-old boy one time, but mostly just got my ass kicked by the 8-year-old girl. So, I decided it that it would be btter to trade it for some game I would actually play and actually enjoy playing.
The same guy got my copy of Evolution, too. So, I'm pretty much tapped out of ultra-1337, rare and crappy Neo Poke games.