Sturmey_Hub
Riding in the Schwarzwald
If my friends at Woodrup charge similar to us at Ellis Briggs, a modern style steel frame like that is from about £2.5k depending on specification and tubing.
We're building something very similar all road frame at the moment with a GRX groupset and and 35mm tyres.
You can find out more about what we do here-
https://www.ellisbriggscycles.co.uk/bespoke-bikes/
Thanks - I looking into this