HAproxy in reverse with public netblocks

Hello, I was wondering if anyone has used this to round robin outbound traffic through public netblocks?

We use a web balancer in reverse now for this, with a large load balancing company, and it’s very expensive (80k for two updated models in HA). We’re looking for ways to cut costs.

We have developers who get lots of data from the internet and we have many public blocks for this. Our current set up round robins through these blocks, each with a DNS record so sites can contact us if needed. Some firewalls can do multi-wan but require a physical port for each block. Our current set up has all the networks on one physical port, with a dozen VLANs as well. So we’re trying to find a way to replicate this.

Thank you,

Matt