This domain name is interesting. Pronounced quickly ewesell.com could be misintepreted as it is not a common term. Depending on how this domain is pronounced it could rate a higher appraisal, but on a safe scale we've rated it at $133 http://www.zoneregister.com/appraisals/ewesell.html
I don't think it is worth anything of its own so its entirely down to your negotiating skills rather than looking at the names value. Perhaps $500-$1000 is worth suggesting if its a corporate type, would sell for a lot less though if need be.