Yeah I know. The second one costs more than a gamecube which is a bit crazy. Actually lot's of gamecube games now cost more than a gamecube.
I think it's mainly due to the Wii being compatible with Gamecube games which keeps the demand there. I've heard the Wii has an online shop feature where you can download nintendo classics onto your Wii's hard drive for a cost. eg. Mario 64 for £8.00. Nice idea that.