From reading the comments, I think you could be a lot leaner by selling the $100 setup fee, and telling people which "kit" is supported, and they buy that on their own.

That way you don't have to deal with any of the physical infrastructure of buying/selling/storing hardware, and people can do some customization.

However I do think you'd need to put some restrictions in place so that people don't buy cheap crap that doesn't work and expect you to set it up and support it. They have to buy the kit or other compatible hardware.

I'm not sure what services you'd support, but personally I'd be interested in something like a personal introduction and setup of

• docker
• proxmox
• yunohost
• backups / restore (practice restoring)
• smb shared folder
• pihole / pivpn (can you have wire guard and openvpn setup at the same time for different uses?

Maybe migration of

• nextcloud

You could make different prices depending on what service they want, kind of like a bike stop.

I wouldn't want a perpetual subscription, but I could stomach something like $100 setup + $5/mo for limited support for a year.

Best thing for me is that community support also exists for all these things too, but it's hard to do it on your own sometimes.