Can you even get a good one for under 50$? I haven't used ones since the junior high but a lot of people have told me they work a way better. I do a lot of typing for work and I also game. My current keyboard is winding down.
"Good" and "cheap" don't typically go together very often. There are certainly a lot of good lower end choices in the keyboard market, but a quality mechanical keyboard from Corsair for instance is around $100. The cheaper you go, the poorer the quality will be. If you don't mind buying a used one, you might check eBay and could probably nab a K70 - for around your price range. I use a Corsair red LED backlight K70 (w/cherry red switches) and its the best keyboard I've ever used. Love it!!! Once you try mechanical, you'll never go back.