I think Craig is spot on.
On a similar note (not trying to highjack the thread), if someone posts a pic and asks about the marble on one of the boards. I do think it is unethical for someone to lowball a price before the poster finds out at least a value range on the marble (obviously depending on condition, etc.). The boards are here to help people learn about marbles.
By the way, on the eBay situation described above, if the Buyer that makes an offer gets burned on condition......?