Bad classified ad RC purchase, what would you do?

[simplechamp]

It was listed on RC Tech.

The only thing that concerns me now is that we know people like this are jerks. So if I leave him a negative he will most likely leave me a negative too in retaliation even though I did nothing wrong. I was in a situation on RCU one time where a guy made an offer on my item, then refused to pay, and when I threatened negative feedback he said, "Go ahead, I'll just leave you a negative too." I don't want a negative on my profile just because some idiot wants to retaliate.