What's their usual price? 49.9x or something?
I have one that's a few years old (got it for the $30 deal back then). It's held up fairly well, although I don't use it all the time like some folks do. Sound quality is excellent, but it is subject to noise from stronger wind (I assume they all are). It blocks out most casual wind noise.
It has very good range. I've walked around my house and didn't realize my phone was in another room until getting outside and the static got real bad. Same thing, left the phone in my car and walked up to the front door of a store (about 100') before I realized the static was due to range.
One of the gaskets broke on the part that goes in your ear. Replacement ear pieces are $7ish + shipping so it's cheaper to get a new unit. I was able to take the gasket off the other sized earpieces that I don't use, but, if this one goes I may not be so lucky.
All in all, very happy with it and would buy again. I'd be very happy if they revised it so that it can be charged from a mini-usb plug instead of the proprietary one.