Shimano had a really good deal on the steps system for framebuilders if they would show the resulting bike at NAHBS. You can find pictures of them on flickr. Use your favorite search engine to search for shimano steps nahbs. The main year for that was 2015, but there have been examples every year since
A stock ebike with one of the big name ebike motors costs at least $3500. I would expect to pay more from a custom builder. The one ebike I have seen that was built for a customer was by Rob English
here is a blog post about it
Dale?s STEPS e-bike | English Cycles
his basic frame price is $3200 as of this writing. I assume the ebike is considerably more
Originally Posted by
nfmisso
There are a LOT of custom frame builders out there, very few have e-bike experience. The custom frame will be expensive - figure $2K to $3K for the frame. You should inquire on the frame builders forum
https://www.bikeforums.net/framebuilders/
please don't cross-post, it's not allowed on bikeforums. This is the best place for this question