It's almost always a road trip for me. San Jose, CA, Denver CO, Buffalo NY, Knoxville TN, etc. I have also had a few shipped in. I have been lucky enough to have knowledgeable people do inspections for me. I have only been disappointed once in the last 35 years in the hobby and that was by a classic car dealer in Missouri. I should have been suspicious when he accepted my first offer without trying to get more $$$$ from me. He answered all my questions to a degree that I couldn't say he was actually lying, but they did skirt truth. My fault for not asking enough questions or going to inspect myself.
If a seller doesn't have the proper documentation for me to transfer ownership, then RUN! Promise of a title or registration is a big NO!
I deal in cash, or agreed payment options only. Personally I don't like paper trails. If the car is not paid off, the seller has to agree to meeting with the people holding the paper on the vehicle and they be paid off at the time of sale, guaranteeing you clear title.
Transport companies are many and depending on your time frame, shipping options, insurance, etc. can vary from a few hundred dollars to a few thousand. Just figure it into the total amount you pay to see if it makes or breaks the deal.