Can you recommend a cheap server hosting service for indie games?

I've tried playfab multiplayer services, but I'm only 10 days in and already my free monthly quota is almost used up.

I need something to be able to sustain ~10-20ccu on a competitive FPS, either free or cheap. 

I'd also like to have at least two instances, one for EU and one for US so that my game can be played in both regions.

if you using unity then this can be cheap: https://www.socketweaver.com/index.html

You can try player.io, I guess.