lots of domains of this quality sell in the $2000 - $5000 range each week in the DNJournal  sales report.  I would counter unless you really need the $499 or really want to get rid of the domain.  If you've been holding the name since '98, you could probably wait longer.  It is a nice short brandable name, easy to spell and say, and applicable to internet activities (with the keyword 'site')