I have a GC, GB Player, and Hori GB Player controller (which also works pretty great for VC games on the Wii) and I love it. With component video it looks pretty great. It also puts out stereo sound though the TV, and plays every generation of GB game.
These days I'm pretty sure you can get all of this, plus a few games, for less than $130. What is a Gamecube worth, $5?