Just check out GameStop for Wavebirds, I bought 4 (one at a time) for $14.99 each over a ten week period, people trading in Cubes frequently trade in original and Wavebird controllers. If they didn't have one (which was most of the time to be honest), I just checked back again untill I loaded up! The key is checking frequently, as they usually go the day they get them. The demand is only get bigger, so start now.
Wii Code 3456 7941 4060 2924