If you can test-drive it, go ahead and react accordingly. Just keep in mind that, in addition to all that's been said above, the RF alignment is also important. If you fall in love with it, and something falls short of perfect you can always get some kind of compensatory discount (say, the alignment is off and the cost of fixing it is approx. $100).
In any event, not unreasonable price if the camera is in the condition the seller claims.
Best of luck! 🙂