1. price 0.0666 btc = $265 ...its crazy expensive for AWS acc
2. AWS is not good enough for mining...my experience is got suspended no more than 24 hours.
if you can do escrow, i want payment hold in 1 week.
if acc suspended in 24 hrs you dont get payment, but if 1 week live , escrow service will release the payment
If you want account at pretty reasonable price then you might need to take a look to my thread :https://bitcointalk.org/index.php?topic=2069298.0
Ofcourse no one will warranty to miners but i can give you special deal .