Electoplankton

This looks like one of the coolest games on DS right now, but for whatever reason it's impossible to buy it anywhere. Unless you eBay, on which it is going for US$50+. Does anybody have this game, or have anything to share about it?

I haven't actually played the game, but from what I've heard, the game is a nifty little doodad in which different types of plankton make different noises/simulates musical instruments. Eventually you can create a whole orchestra of planktons, and make your own tune. It's like a mini music synthesizer. And, well, that's it. The game is not any long lasting RPG or anything. Some people have lost interest in a short time.

Even though the game was originally only available online at Nintendo I think, I've seen the game in stores like EBGame for around $40CDN.