Start here ^: You said you replaced your tires, but you didn't say what, if anything, you noticed about the tires taken off.. . . Did you have unusual tire wear on your old tires?
All good questions. I doubt the unibody (sometimes mistakenly called the "frame") is bent -- the misalignment is not that extreme -- but, more important, if this is related to the accident you had, it should have been included in the repair work and (perhaps) covered by insurance.Maybe your rear accident was more than "minor". Was the collision on the rear left? Did you get hit in the rear or did you run over something? Maybe suspension damage or bent unibody.
I agree. And, let me add, two degrees of negative camber, while not extreme, is still an "other than normal" number for normal driving. (Negative camber means the tire is tipped in at the top, out at the bottom.) If it were on the left front rather than the left rear, it would be fine for autocrossing, but two degrees of negative camber is not something you want on the left rear or for commuting. If accurate, it needs to be corrected or, as you were told, it will result in noticeable, pre-mature tire wear. How much and how quickly is tough to call from here.$340 seems reasonable for repair and realignment if they use OEM parts. (Emphasis added.)