SearchFever.com is not as good as SearchBuyDirect because of the keyword content. However, I believe this domain name would set a ceiling. I would expect your name to fetch low xx - possibly as much as $40-50 if you found someone willing to develop. Not a bad pickup though, Good luck with it!
If your recieving $500 dollars I would accept them. Based on the face value of the name - I stand by my appraisal. However - appraisals are worth about as much as you can throw them. If your not happy with the comparable sales data - sell this one and prove us wrong. Again, it was not meant to offend you, simply give you an actual opinion based on "opinions". Best of luck!