Agreed. Something in the $30-$50 region with a lower usage allowance and the ability for more (private) apps than the free allowance would be much more palatable to me as a freelancer.
That would be better for me (in the short-term), but supporting a large number of low-value customers is probably not going to be sustainable for them.
Thanks for the suggestions! This is a hot topic internally, so we'll have some more announcements in the coming months. Keep an eye on the blog/twitter.