so your budget is about 90$...
and i believe you are looking into recent series of gpus.
your only option would be GTX650 (no TI, no TIBoost)
the price is between 70 to 100$ for this gpu from various manufacturers.
for a similar price you can get from older series gtx560 and gtx560TI. maybe if you are lucky enough you could get a gtx570
on the other hand you have some AMD options too you may want to look at;
hd7750
hd7770
hd7770ghz