Two short 1-syllable tech-related words. Unfortunately SitePort doesn't describe anything except for maybe a service that helps you port your site to another host, which is a service that most hosts offer for free.
I don't see much value there myself.
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')
*the exceptional businesses of our esteemed moderators