I've been running my own ASN for a while. I route both IPv6 and v4 back to my home network over wireguard. I use Vultr for one of my providers.

They have no additional charge for BYOIP and you can use their private ASN if you don't have your own: https://docs.vultr.com/support/products/network/can-i-use-my...

If I used AWS the bandwidth charges would probably be a bit high.