Consider how much feedback they have and what is there rating? I tend to always give people the benifit of the doubt if they have real good feedback and if they have a lot of bad feedback I try my best not to do business with them.

Also, after you get your car I would be very careful about leaving negative feedback FIRST. If you leave it first you will probably get it right back even if you did everything right and do not deserve it.

Good luck, hope you get the car and like it!