It's a great setup. I've used it for several years. You can find them at a bit of a discount on ebay, but not much, and for the little bit you'd save, you might as well buy new.

I'd rather have a history of my own sweat in the headset, than buy used. I tried buying a uflymic off ebay, but the person who sold it to me misrepresented it, and it would have cost too much to have it TSO'd. Any that you buy new now come that way. The whole setup runs about six hundred bucks if you buy the QC-15 and te uflymic new...for the TSO you also need the earbuds (I keep the in a bag, but don't use them, as a rule)..the folks at uflymic give you a price break if you buy the earbuds and the mic together.