Comment by peterknego

A GAE datastore delete takes multiple operations because it also updates indexes:

1 entity delete = 2 Writes + 2 Writes per indexed property value + 1 Write per composite index value

All from this page: http://code.google.com/appengine/docs/billing.html#Billable_... And more about why it is so: http://code.google.com/appengine/articles/life_of_write.html

Well, the OP is just another coder who can't read docs, but can write a blog.