We bought one that way once for my brother. Went to Texas and bought a bike that had a lien on it. Texas is a title holding state. I was comfortable with the seller after checking him out. He was an insurance agent and had a very good public background. We completed a bill of sale, and a limited power of attorney giving us the right to complete any transaction on the bike in his name. We gave him two cashiers checks, one for the balance of the loan made out to American Honda finance and the other for the balance of the purchase price to him.
He sent in the check and when he received the title, signed it and sent it to us.
With the Busa, I sent a deposit on to hold the bike. When I went to pick it up, we went to the bank with the sellers and paid it off with cash, picked up the title, and signed. I was comfortable with everything as it was a long time board member here.