You van use a daily cron job to delete parts of the old stuff and stay within your quota. In this way you can make use of your free new quota every day. Maybe it is not cheaper, but you stay within tour quota. And ofcourse use batch delete.
-- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-appengine/-/JPHMSfKzm5sJ. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.