Every piano review judges two things: how it sounds, and how it feels. This book is about the third thing — the one nobody covers, because it is not in a showroom and it does not photograph well. It is in parts catalogues, warranty documents, service manuals and manufacturers’ own specification pages, and it decides whether the money you are about to spend was well spent.Two companies dominate this market. Between them they publish exactly two key actions in this price class, and print those two actions across eight different pianos spanning six hundred dollars. One of them will sell you a complete replacement keybed as a single part number. Another states, in writing, that it will not sell parts to the public at all. For a third, the part does not exist.What is inside 44 pages, eight parts, ten printable cards The parts matrix — who sells the keybed, who sells nothing, for every maker in the class The warranty sheet — term, labour, and who pays the freight The clause that voids factory cover on a second-hand instrument The thirty-second check to run before you buy anything An honest look at what $3,000 really buys The Piano Field Kit — a separate printable file with all ten cards and both lookup sheets No sponsors. No affiliate links. No manufacturer was contacted, consulted or given sight of any page before publication. Every price was read on a published page and dated. Corrections are free and permanent — every buyer gets the new edition.