Maybe you can appraise domains for charity...
In a way we all do around here...
But seriously, I don't think the .org is THAT horrible for this name but you will have to do some >zplaining if and when you develop the site as to why you are an org (ie are you an official appraisers' union, a theorhetical appraisal model site, etc)
Good luck. I give it about $30-$40
AND YES this would be a great name for someone to explicate their method or modeling or appraising domains (appraisal models, algorythms)