Server Host

Hi, I run a Roleplay server with 2 different things, you can Roleplay or play in the prison. We need a host for our server. Our host is becoming to expensive! I would prefer a free host or $5 per GB! Heres a link to the server page if you want to see it!
http://www.planetminecraft.com/server/rise-of-darkness/

Please PM me or comment if you are wanting to host our server