What's the name of the code?
AngelHack 2016 bro
No, that answer is not good enough. AWS Codes from multiple different AWS events show as "AngelHack 2016". So what particular event are these codes from?
"AngelHack 2016" codes from the same event
don't stack but "AngelHack 2016" codes from different events
do stack, see my screenshot of two "AngelHack 2016" $200 codes
from two different AWS events:
If you don't say exactly what event are your codes from you are hurting your own business because people who already have "AngelHack 2016", but from a different event, will think your code is the same and thus they won't buy even though they could buy.