In the clavichord business, its done like this, calculate the actual hours spent building(not researching, marketing, etc etc) times that by your minimum wage. Then calculate how much below that figure you are willing to go to get an order, and compete with the other clavichord makers who all seem to work for much less than minimum wage!! Many of them seem to be independently wealthy, which really helps take the realism out of the prices. For instance at David Burgess' hourly rate a $5,000 clavichord that takes 3 months to make might sell for $60,000. Not going to happen in the clavichord world, Ah but its a small tight knit community of player and makers, we all love each other, so different from the violin world.......