And yes, you're right on these costs. Some exchanges will charge large 5 figure sums annually just to give you a port so you can subscribe to some unreliable (UDP), poorly thought out, over-engineered-in-the-early-2000s, market data protocol that requires you to spend weeks of engineering effort to debug and normalize because hey... every exchange wants to use a different tech stack and none of their customers want to use a vendor library, so they don't exist.

The irony is a lot of organisations that are used to dealing with these feeds struggle when it comes to crypto, because they're not used to a world of websockets and public facing IPs, or the risk of exposing their machines to the internet.

One company I know pays a small 5 figure annual sum to a shitty "cloud solutions provider" for what is essentially just a dual NIC reverse proxy providing access to Coinbase via a stable IP. The is provider of course charges thousands per IP. Managing public cloud infrastructure is just outside of its comfort zone.