Well, one can build damn good top tier quality speakers for $1500 per easily. It takes knowhow of course to design (but there's literature) and tune it, so feel

Well, one can build damn good top tier quality speakers for $1500 per easily. It takes knowhow of course to design (but there's literature) and tune it, so feel free to charge double. Anything beyond that is brand and greed with minimal returns, unless it's a truly exotic design which may not necessarily be better. (Ribbon speakers, electrostatic, isodynamic...)