$100 you can get 7770 or 7790, with proper settings 7770 is 200Kh, the 7790 is a bit higher by a few points

$180-$200 you can get a R9 270 which is 2.5x faster it can get 450-470Kh with proper settings, some people say XFX is bad brand for graphics cards though, never tried them though but i've stayed away just because of bad stigma lol