If I had a nickel for every time someone asked this question 🙂
The desire to get a quick and easy answer for the value of one’s piano is extremely common but unfortunately nearly impossible to do with any accuracy. An instrument’s value depends on multiple factors such as:
• Style and finish
• Type of Value
In addition to some of the more obvious above such as make and age, other factors are very important. For instance, regardless of how a piano looks or even plays, the condition is something that can only be accurately determined by a qualified piano technician. If you need to find one you can look at http://ptg.org/findATechnician.php
The market varies depending on the geographical location – the same piano might sell more easily or for more money in one area than another. And then there is “value” for which there are several definitions. What you could sell the piano for is different than what you might insure it for which may or may not be the same as what it would cost to replace the instrument. And on it goes.
Generally the piano market is quite soft now which is great if you are buying, not so much if you are trying to sell. What your piano is worth is what someone is willing to actually pay you for it. If you need a more accurate estimate, you can pay for an appraisal or do some legwork to find out comparable prices in your area. Try classifieds, piano stores, teachers, technicians, other piano owners or pianists, etc.
For a more general idea of used piano values Larry Fine’s information at http://www.pianobuyer.com/fall11/67.html may be helpful.