That's a pretty huge price increase. With all the competition in this space (Recurly, CheddarGetter, Spreedly, many others), I would assume the prices would be going down, not skyrocketing up.
They obviously are banking on the fact that their customers are already tied up with their API, so it would be difficult to switch. This is pretty sketchy, and it's going to make me very suspicious of these guys in the future. Also.. no grandfathering clause for existing paid clients?
I don't think you can expect these services to lower pricing any time soon. Why? It's clear now that Chargify and Recurly, who have both tried a very friendly freemium model, vastly underestimated the costs and problems associated with the businesses they are building. In both cases, it's a good bet that they needed to either raise prices or go out of business.
Pricing only goes down once the business model is clearly established across multiple competitors. This space simply isn't clearly defined yet.
They obviously are banking on the fact that their customers are already tied up with their API, so it would be difficult to switch. This is pretty sketchy, and it's going to make me very suspicious of these guys in the future. Also.. no grandfathering clause for existing paid clients?