the protection system ebay has in place for the buyer and seller, covers most of the dishonesty type problems, basically if they lied to you ebay will make sure you get your money back. As far a insurance and paperwork goes, it would be just the same as any other private-private type auto sale. And you pretty much have to make direct contact with the seller, ao that they will be able to access the escrow service for payment, otherwise the escrow service will hold the money until an expiration date and then return it to the buyer. I have bought 3 cars off ebay and not one time have I had a major problem, the only time I experienced any trouble was with a long distance shipment, the company that was carrying the car charged a couple extra fees upon delivery…learned to read the fine print on that one.
Anyway good luck,