His 1000 sq.ft. circular house could be put together by a couple of people in less than 2 days, weighed under 3 tons (lots of aluminum), self-cooling. It was supported by a single mast, and portable. 80 years ago, the ‘kit’ cost $6500, delivered.
You can see the only still-existing house at the Henry Ford Museum site. https://www.thehenryford.org/visit/henry-ford-museum/exhibits/dymaxion-house/
From the look of them (https://duckduckgo.com/?q=eichler+homes&iar=images&iax=images&ia=images&kp=-2) they’re STILL modern-looking and something that might still fetch a pretty penny today. Amazed I never heard of them before.