@engineer,
I think all of these shows are faked. I like Pawn Stars but I know those patrons are setups. (Theyve gotta agree on a price earlier than the show airing so the patrons arent stiffed by higher sale percentages by Rick's minions),
Antiques Roadshow went through an entire scandal by some Pa "Civil War Artifact EXpert" who gave an inflated appraisal of a sword which turned out to be a fake and was known to the expert.