If you want a great xbox360 headset for $10, here ya go:
http://www.amazon.com/Xbox-360-Over-Ear-Headset/dp/B000F1WDHW/ref=sr_1_1?ie=UTF8&s=videogames&qid=1270568024&sr=8-1
No need to look any further. Been using this one for months, couldn't be happier.