I think if they got them under $5,000 that they would sell well.
These would be great for noise sensitive areas, back yards, mountain bike trails, ski hills, etc.
I would be curious what they can do with it pricewise. And the economics of bike like that are a lot different as well.
There are no engine rebuilds, no piston replacements, no clutches, no clutch basket, no gas tank, no carburetor, no Efi, no cams, no cam chain etc.
It is a much simpler machine with far fewer wear parts. I would bet that the long-term cost of ownership would be lower. Which would justify a slightly higher upfront cost, but not that high.