Wow, I was a little surprised to learn about this. Several years ago; around Spring of 2005, I sold a bundle of PS2, Gameboy Advance, and GameCube games to a local CD shop. Two of these games included Super Mario Sunshine and Legend of Zelda Wind Waker.
Well, I've been thinking recently that I'd like to play through these two games again; but the prices for them are a bit steep. It looks like a complete Wind Waker goes for about $80; Mario Sunshine anywhere from $50-100. I remember when I sold these titles, the CD shop had tons of copies of these games and they really didn't pay me much for them. Guess I should have just hung on to them.
Has anyone else had this regret; GameCube or otherwise? I've been collecting video games for almost 25 years now, starting with buying NES games in the mid-90s, and I never would have thought that a system that's only 10 years old would have become such a collector's item.