This is literaly just a bare repo over ssh, and a gitweb interface.
It's too trivial for anyone to be selling that. And I don't think there's a large market for $5-$10 barebones setup when GH is free and you can self host.
Just like pikapods supports running things like actual budget for you - https://actualbudget.org/docs/install/pikapods
Something similar from them or digital ocean or linode or Hetzner would be a win.
Pika does offer Forgejo and Gitea.
I pay DigitalOcean $6/mo for a VM that started out as just that - a bare repo and ssh. If it was available at the time, I'd probably have paid $10 for the same if I didn't have to set up and administer the thing. I lost interest in administrating web servers in the early Apache 2.0 days so a private "mini-githib" would be tempting.
(I use that VM as my primary public nameserver now and I don't really need a web front end for git so I'll be keeping my current setup. But if it had been available back then, I'd probably have gone for it.)