- $0.10 per CPU core hour of computing
- $0.10 per GB of inbound traffic and $0.12 per GB of outbound traffic
- $0.15 per GB of data stored by the application
- $0.0001 per email sent by the application
Full Details are here: http://googleappengine.blogspot.com/
A longer write up on google apps engine and how google can make it useful is at: http://gigaom.com/2008/12/03/chromes-extensions-the-missing-piece-for-google-apps/
