Funny, I always said that the hand made units I make would be $50K if a well known audio manufacturer made them! Looks like a point-to-point wired unit. Chassis is subpar for a $100K unit and so it the volume control. Power supplies are robust. Chokes and transformers look to be quite expensive. The $100K is a suggested price. Cost to build without labor maybe $10K??? Selling only to people with very high end systems who can afford these toys. BUT it all comes down to how it will perform in a system and what that person values for sound. What if it was just all out 50% to 100% change in a system. What would that person pay for that improvement. Most of you know that I build DHT DAC and Preamp. Recently compared my R2R discrete to a Chinese knockoff. While at first listen the Chinese sounded good, in comparison there was a significant improvement in space, vocals, texture, tone, etc. What is that worth if the Chinese unit costs $2500?
Happy Listening.