[ElijahLynn]

"We are introducing a new charge for public IPv4 addresses. Effective February 1, 2024 there will be a charge of $0.005 per IP per hour for all public IPv4 addresses"

https://aws.amazon.com/blogs/aws/new-aws-public-ipv4-address...

[apitman]

Yes and setting up a single IPv4 VPS as load balancer with SNI routing in front of IPv6-only instances solves that.

Most people are probably using ELB anyway.