We also have to account for negotiation prices. Sure, a pin may be selling for a ridiculous price, but say someone says they're interested, they come to look at the machine, and they offer a price that's lower.

That may annoy the seller, but suddenly when they see that cash on glass their eyeballs turn to dollar signs. It's hard to resist saying no to a wad of cash when it's right there for the taking. Of course I'm talking in relative pricing terms; A Lord of the Rings owner isn't going to sell for $5k, but if they get offered a price that's within $1000 of what they want, they'll be tempted.