The pricing plan has developers still getting around 500MB of data and 5 million page views per month for free. After that, developers will pay 15 cents to 18 cents per GB of data stored monthly, according to Google.
Also, developers will be charged 10 cents to 12 cents per CPU core-hour consumed. On the bandwidth side, developers will pay 11 cents to 13 cents per month per GB of data transferred out of App Engine and 9 cents to 11 cents per month per GB transferred into App Engine, Google said. The pricing schedule is to be effective later this year.Also interesting to note; App Engine also will now allow anyone to use the service, expanding beyond a list of 10,000 developers that gradually had grown to 60,000 developers. "We've decided to open the floodgates," More than 150,000 developers have been on the product's waiting list.
If you haven't done so, you should check out http://code.google.com/appengine/
I'd also recommend checking out http://pypi.python.org/pypi (The Python Package Index is a repository of software for the Python programming language) for some ready to go python apps for quick and easy deployment on GAPPS.