Mine has been vigorously tested to the extreme... so should be worth quite a bit!PerroneFord:Depends on what you're asking for it. I get great prices on new ones since we're dealers, but I just don't need it right now. When I start carrying two deco tanks, then I'll be more interested.
And to OP: I still carry my Apeks Quantum (DR Duo) in gauge mode, it has performed wonderfully ever since I got it a few years ago.