http://www.razerzone.com/gaming-keyboards-keypads/razer-blackwidow-2013
I know this a predictable choice since razer is quite popular and its 80$( a bit over what you asked). But of all the keyboards ive handled this is by far my favorite, the moment i bouht it i fell in love with it.
Its a heavy and sturdy keybord, so it feels reistance and looks like it could take a couple of blows or acidents, the mechanical keys are excellent feel fast and light with a precise "click" that minimizes missclicks and allows for a faster response. It looks good to, even tough its not backlit keys you dont really need it, the font style used are big enough to be well seen even in the dark. You have 5 macros on the left side that come quite in handy for a lot of multyplayer games and such. The software, razer synapse is preety simple to use. Overall a great keyboard.