I bought my LJR from a private party in North Carolina sight unseen, got a PPI from Rubitrux which was close by, they caught most stuff but not everything. Most shops will just charge an hour labor for a PPI. As it was a private party I did paper work and verifications like crazy to try and CYA. It was stressful as anything (I paid, then had it transported via car carrier too) but it worked out well and I got a good deal on it, it was a great find so it made sense for me ( I could resell it here and make money even with the transportation IMO) the things I have found weird/wrong with it so far have been fairly simple fixes.
A lot of dealers, I found, were very against a third party shop looking at it.