What's an '01 Haulmark 22'- 8" box, enclosed trailer w/ std hitch worth...

[ultraflo]

...with a few hundred miles on it? I may be way off (vague) on this question, but figured I'd ask around before searching the net.

A local guy bought it for $8500 and said he got a deal on it, used it to haul a car from point A to B once and has been sitting on his lot since then. My dad has a new LS6 crate motor that the guy is interested in, and I will put up the extra cash to make things even... which brings me to the question of how much, generally speaking of course, would it be worth.

The damn thing is like new, with deluxe mag wheels, super clean int. and ext., etc. ...looking for some ballpark figures here. Sorry I couldn't supply more specifics on all the options, so just a generalization would be fine.

Thanks,
-Ryan