I've watched several of the coin shows on cable TV.
Apparently when the used cars sales union finds a dealer who is sleazy beyond their lowest standards, they kick 'em out and dealer starts hawking absurdly overpriced coins on cable.
I hope no-one is falling for their overpriced cons.
BTW, if you are buying any item as an investment, you need to find a forum where people buy stuff back. Cable TV is the worst posible forum for any investment grade purchase because it is a one way medium.
A local coin club, coin shop or coin show would be best avenue for investment.