Say there's a discussion about a set of pickups or a pedal or something from a new/unknown builder. Someone asks how much they cost and the person who already owns them says "PM me" or tells you to get in touch with the maker. I dun get it. Is it an extension of the idea that talking about how much money one makes is bad form? If so, they're apples and oranges, because generally speaking that kind of information should be easily available. It gives an air of pretentious exclusivity that turns me off altogether. IMO, unless you have a product from a builder that only does custom work and therefore has no standard price, there should be no shame in disclosing the price that you paid. Unless you bought a Centaur.