I own a /24, personally. It was registered in the early 90’s. I have it routed to my home network.
I just installed a new FTTH ISP at home and learned the hard way what CG-NAT is, after years of having my own public IP with my previous ISP.
I pay about $180/month for a “business internet” cable line. 300 megabits down, 25 up. I also “know a guy” at the ISP who made sure the routing wasn’t going to be an issue.
This is super interesting! I didn't know this was even possible before I started looking into it.
[1]https://superuser.com/questions/323801/how-can-i-own-an-ip-a...
There are also cloud providers, like Vultr, that will allow you to do BGP with them. You could then get a network block routed to a VPS, then tunnel it out or whatever.