I'm with the OP on this one. The value of any item for sale in a market economy is based on what someone will pay for it. Like in the case of the Volkswagon Beetle that Quickdraw was selling who knows what it is worth to someone...one mans trash..etc.
I sell weird boat items on eBay, usually stuff found in the trash at the marinas near me and what people will pay for these items (by definition, what they are worth) surprises me both in how much or how little value is placed on the items. I'm in the business and I can never tell what something will bring. I wouldn't dare comment on anyones asking price on an item.

Mike