Your most valuable DS games?

[mysticwolf]

I have Metroid Prime Hunters. I had to go to like 5 different places just to find it.

I also have the Game and Watch Collection

I think my most valuable DS game is Electroplankton. I actually found out about it in a National Geographic Kids magazine a long time ago. I decided to get it, but the only place I could get it was online. Then when it made it's appearance in Brawl, I assume the value of the game went up. Also, I looked on the game database, and very few other people have Electroplankton on VGC. I bought it for about 20 dollars, and now it's about 30 dollars