As an SEO guy, I would put a value of $10,000 on the domain. But, you'd most like be able to get about $5,000 for the domain in this market. More if you were to build it out with content and get some links to it.
A while back I sold SEOFocus in king for 3.5k on payment plan but buyer only made 1.6k in paymrnts and stopped. I'd say yours is worth more. I mirror the 5k-10k valuation above. Looks like godaddy appraisals also puts it in that category.