Google App Engine Prices
Saw this article on Infoworld about pricing beyond the basic free account for App Engine users:

• 10 cents per CPU core hour
• 10 - 12 cents per GB of data transferred in our out of an application
• 15 cents per GB / month of storage (including files and structured data)
• 2,000 e-mails a day free + 10,000 e-mails per day for $1

WOW!