I'll throw another call out for the K81DJ. I think theyre a great little headphone. You could probably find them used in that price range. Maybe new in the upper end of that range, if not maybe 1 few bucks more. The SJ5s also seem to have good reviews, thought not as many yet. But it is a bit cheaper ~50 IIRC.
I'm not sure if the K81DJ & SR-60 are what the OP is asking for. He is asking for full circumaural headphones I believe.
Grado's are NOT circumaural, they are supraaural which means they rest on top of your ears.
In that case, I believe one of the few decent ones in that price range is the Sony V6.