Fine, yes surely you can sale your domain name, before that you get the appraisal for your domain.....because it is useful to sell your domain name & to estimate the value of the domain.........
For that you can visit this site http://www.zippozap.com/ , it provides the best results for domain name appraisal and also you can either appraise a single domain name or up-to 10 domain names in a single shot.