cases to buy

i've been trying to buy a bigger case that has a fan.
there was one in particular that stuck out to me but i'm not sure if they sell it in stores and i cant find anything online so i was wondering if someone can find one thats selling or something similar
i was looking at the gateway fx 6800 series case
if buying just the case isnt possible then does anyone know a case that has a fan and the thing on top where you can put things and the hard drive opener/slider thing