[Snowman]

I've seen some crazy high prices and some very realistic market prices from them. It really depends on the card. He's probably in no hurry to sell the 1952 Mantle. I think when you have huge cards like that, sometimes they're more used as marketing listings to draw people into your eBay store or website. He isn't really interested in selling that card at all (unless someone wants to overpay for it of course), but he knows that listing it on eBay at any price brings him more clicks on his other listings.