yeah, aws free tier instances are t1.* only (so throttled/burstable)
however, if you have aws credits (i occasionally see people selling them here for around 7-10% their value) you can spin up spot instances of their more powerful instances for cheap
a g2.8xlarge will run at 2kH/s for around 0.5USD/hour ...not profitable unless XMR triples in value but if you get say 1200 $ credits for 100$, you can run 2 instances for almost 2 months to make about 50 XMR (so 600usd at current rates)
the only problem is you can't stack many credit codes together on the same account ...max 4 i think