You can’t sell this cause the license doesn’t allow it.

"This repository is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License, which prohibits commercial usage"

People could pay somebody for the service of setting up the model on their own hardware, then use the model for non commercial usage.

IANAL, but this looks like a grey area to me: it could be argued that the person/company getting paid to do the setup is using the model commercially.

Doesn't allow it yet, but on the readme, they write "This will be changed to a license that allows Free Commercial usage in the near future". So someone will soon be able to sell it to you.

Not using this model, but something similar. How much would you pay?

Based on the lack of replies, the answer appears to be $0.

Bark is MIT licensed for commercial use.