Game cube emulator?

[Made in China]

While finding a functional GameCube can be a bit troublesome, finding a functional Wii is probably easier and cheaper - it was the best selling console of the last generation, after all.
Get one with the Classic Controller Pro and you're all set. I even think you can even plug in the original GameCube controller on some models, so if you still have that, you can save $20.
Cost for a brand new console: ~$150, depending on your local vendor.