I've read around on this forum and found pretty much all the information I would need to copy data from my GC games to my PC, but I may have a problem. Needless to say, the Gamecube is fairly outdated by now, so two questions:

1) Are GC Broadband Adapters or SD Adapters still available anywhere but on eBay?
2) How much would such equipment cost?

Also, so I would know what I'm getting into before purchasing these things, are there any legally free games I can download that are perhaps of GC quality that I can play on an emulator to see what it's like?