When I click the bill dashboard, it says:
Current month-to-date balance for November 2013
$0.00
EC2 $0.00
DataTransfer $0.00
SNS $0.00
Tax $0.00
Total $0.00
Credits show
Expiration Date Credit Name Credits Used Credits Remaining Applicable Products
2014-12-31 MRK_11_2013_IntelPowerof60 $0.00 $100.00
See complete list
So just want to make sure I don't overspend - but look at the way they are charging, it is actually quite reasonable considering digitalocean are charging $160 a month for an 8 core. I might well be tempted to at least subscribe to 1 32 core as a long term thing
click on bill details on top right, then expand items