[gashad]

AWS doesn't charge to put data in to s3. It's free to pull data out from its region to any AWS service within the same region. It can get expensive to pull data out across regions or out of AWS infrastructure (ie. to your private data center).

[meritt]

AWS does indeed. They charge $0.005 per 1000 PUT requests (which is 12.5x more expensive than GET requests) and then you're immediately paying for storage space as well.

[vacri]

Wow, I hadn't noticed that before. It's less than a third of the cost to store data in S3 than to pull it across the wire (2.3c/G store, 9c/G wire, in us-east-1)