I am afraid you won't be able to get anything specifically labeled as a "gaming" keyboard on that budget, however there are some nicer baseline keyboards in that price range. I did find this one:
http://www.amazon.co.uk/Illuminated-Keyboard-Backlit-Multi-media-Gaming/dp/B00APB4PA0/ref=sr_1_1?ie=UTF8&qid=1373214327&sr=8-1&keywords=AULA+LED+Illuminated+Ergonomic+USB+Multimedia+Blue+Backlight+Backlit+Gaming+Keyboard