Looking at the SNES games my loose Star Fox Super Weekend cartridge that I paid TWO BUCKS for is worth $360!!!

The top 20 from that site for the Gamecube is (*=I have it)
NCAA College Basketball 2K3 Sega 2002 420.00 110.00 45.00
Pokemon Box Ruby and Sapphire Nintendo 2004 296.00 140.00 55.00
Phantasy Star Online: Episode I & II Plus Sega 2004 215.00 98.00 41.00
*Dance Dance Revolution Mario Mix w/mat Nintendo 2005 188.00 72.00 20.00
Legend of Zelda: The Wind Waker [w/ Ocarina of Time/Master Quest) Nintendo 2003 190.00 60.00 18.00
Metroid Prime Bonus Bundle Nintendo 2004 200.00 100.00 30.00
Metroid Prime / Legend of Zelda Wind Waker Nintendo 2005 145.00 50.00 20.00
Beyond Good & Evil Ubisoft 2003 130.00 40.00 15.00
*Legend of Zelda Collector's Edition Nintendo 2003 110.00 45.00 17.00
Resident Evil 10th Anniversary Collection Capcom 2006 125.00 64.00 21.00
*Mario Kart: Double Dash (with bonus disc) Nintendo 2003 121.00 34.00 16.00
*Pikmin 2 Nintendo 2004 120.00 56.00 20.00
Resident Evil 4 (Collector's Tin) Capcom 2005 95.00 44.00 12.00
*Legend of Zelda: Ocarina of Time (w/ Master Quest) Nintendo 2003 90.00 42.00 18.00
Phantasy Star Online: Episode I & II Sega 2002 115.00 46.00 19.00
Super Monkey Ball 2-Pack Sega 2004 95.00 48.00 10.00
Digimon Rumble Arena 2 Bandai 2004 114.00 41.00 17.00
Fire Emblem: Path of Radiance Nintendo 2005 81.00 40.00 17.00
Mega Man X Collection Capcom 2006 90.00 35.00 14.00
*Skies of Arcadia Legends