I need advice please. My son sold his semi on EBay to a guy on the opposite side of the country. They agreed to turn over the title when the buyer flew in and then he would pay final amount (about $8000) when he got back to WA, but has not paid anything (and he has a large operation and can afford it). What steps should my son take, or is he screwed because he signed off on the title and the semi is gone? THANK YOU