Suggestion for a newly built pc?

Hey guys and gals! I finally got my new pc to work! Now I need a new monitor, as I'm currently using my old tv with it. I'm running an I7 4790 with a radeon r9 390 sapphire graphics card. I intend to use it for gaming (obviously) and I would like to keep the price under $200. Any thoughts? I only ask here because I don't have much experience with all the new stuff out there, not to say I'm not learning! Thanks!