I believe Apple is very resistant to external payment systems. They take a cut of all AppStore purchases. An external payment system would cut them out of the bargain.
It's unfortunate that they put obstacles in the way of their own business model then!
It is a little disappointing for everyone I assure you. We have worked out a new model, and hopefully we will have it up sooner than later. LeeDot, will probably post something in the near future.