Instrument retailers nationwide offer guitar appraisals, including Cream City Music and Gruhn Gruitars, which offer appraisals through email and submission of completed online forms as well as in person. The Blue Book of Guitar Sales also offers appraisals through submission of completed of online forms.
Cream City Music offers free appraisals of many stringed instruments, advertising a professional valuation to anyone who sends comprehensive information about his instrument with accompanying photos. Gruhn Guitars' appraisals are available at a minimum fee of $50, as of 2015.
The Blue Book of Guitar Values offers a resource database where customers can look up the specifications of their guitars and get a baseline estimate for value. Additionally, representatives from the Blue Book are available to answer basic questions and provide full appraisals when questioned.