Studio Upright Pianos
This is for general advice only, and covers the spectrum of most pianos not all pianos. Value greatly depends on make, condition and cabinetry of the piano.

Definitions:
The retail estimated value is if you sell to a private party for their own use.
The wholesale estimated value is what you might expect from a piano reseller/dealer.

The retail figures do not factor in extras such as delivery, tuning and a guarantee that would most likely come from a piano dealer, not from you.

I would like a more accurate appraisal.