Domain Data - Online valuation of your domain. Values given in British pounds. - http://www.domaindata.co.uk/
Zetetic - Provides domain appraisals, market research and investment services to speculators in the secondary market. - http://www.zetetic.com
nameappraisal.org - Provides an online appraisals viewable by client. - http://www.nameappraisal.org/
Sell-My.com - Provides domain evaluations for a fee. - http://www.sell-my.com
Appraisal-King.Com - Offers appraisals based on 10 primary factors and provides an example of an appraisal. - http://www.appraisal-king.com
Domain33.com - Appraisal service with ratings based on six criteria. - http://www.domain33.com
Dotlog - Valuation model employs a six variable criteria method. - http://www.dotlog.com
About Domain Name Appraisals - A domain name appraiser, offering 2 types of services. Will also appraise international domains. - http://adnappraisals.com/
Echo Arts - Provides domain appraisals in under 24 hours. Also includes posted certificates. - http://www.echoarts.com/
Tradingmarks - European domain evaluation and auction site. - http://www.tradingmarks.co.uk/
Swift Appraisal - Offers free self-serve domain appraisals. - http://www.swiftappraisal.com
Accurate Domains - Services include guaranteed valuations for a single domain name or portfolios. - http://www.accuratedomains.com/
Back of the Envelope - Domain name appraisal services, as well as tips for buying and selling domains. - http://www.backoftheenvelope.com/