I bought my car from a reputable west coast seller, sight unseen, and just like most things in life--I'll only do that once. I have a great car that needed some sorting out when I bought it--plus a few surprises. Nothing electronic will take the place of you poking around, prodding, listening, smelling, touching, and driving (and stopping) in person. If you can afford a car hobby--swing for the roundtrip ticket (before you wire the money) as your insurance that you are buying what you think you are getting. At this point--I don't think there is much you can do about getting any buyers remorse rebates. I do feel your pain, I've been there
Good luck and try to make the best of it,
Ben