Ask HN: OpenGateway for recurring billing instead of Chargify/Recurly/Spreedly?

I ran across http://opengateway.net/ , which is a $99 installable framework for recurring billing. In light of the recent Chargify pricing changes, it seems an attractive alternative since it's a one-time upfront cost and no monthly charges - in other words, the pricing is a known quantity.

Apparently it doesn't store credit card info locally, which was my biggest concern.

Has anyone tried it? If so, what did you think?