If you are looking to buy a domain name, it is crucial that you get that name appraised first. You will be in a better bargaining position when you know the true value of the domain name you are purchasing.
How do you set a price on a domain name? If you ask too much, your domain will never sell. If you don't ask enough, you may regret it forever. Furthermore, a unbiased and professional domain name appraisal gives value to a domain name - appraisal's, 9 times out of 10 increases the sales price of a domain.