TopDomainInvesting, 100 points to you for spotting the British humour. 
Maybe chiropractors.com? You are joking, right? Just messing with the Yank a bit, ay? Or do you not have chiropractors there across the pond? $10k is a bit ambitious for the other one, but that's where you start, and you are happy with $x,xxx if you can even sell it, including low $x,xxx. If he (or she?) wants to start at $5k, not the end of the world either, but $10k is not unreasonable at all to a solid chiropractic firm. And do I need to even say what kind of parties one should be contacting? None of these domains are a slam dunk but that one at least may be salvageable.