Spacedeckman

OTL tubies do NOT have output transformers, while some SS amps also did have output transformers.

NYAL bought the rights and patents for the Futterman amps in 1976. Julius was selling the Futterman mono-100 for $500, and he had a 1-year backlog that was strictly generated by word-of-mouth. NYAL made minor improvements to the Futterman mono-100 with Julius' guidance, and then NYAL hyped and sold the NYAL version for $3000.

So you see, the cost of parts has a rather modest influence on selling price. The costs of hype and advertising does drive selling price. The financial desires of the principals also drives selling price. But the cost of manufacture is a more modest influence on selling price.