nativenewyorker - 2:00 pm on Feb 24, 2006 (gmt 0)
It is possible that the domain has traffic and generates revenue from old inbound links or type in traffic. An independent appraisal from a third party may not take this into account, as they are not privy to information known by the domain owner. The independent appraisals may say the domain is worth $500 based strictly on the quality of the name, while the domain actually generates $500/year in PPC revenue. That would explain why the seller has no desire to negotiate.