"The ridiculously huge mistake I think Chargify made here was something I thought was just a given these days: they should've unilaterally grandfathered all of their existing clients, and quietly given the grandfathered plan to anyone who was already integrating but not yet launched as well." (http://news.ycombinator.com/item?id=1781104)
It's one thing to trash your competitor publically. It's another to then do the exact same thing you were complaining about one year later.
This isn't about the numbers - $30 is jack squat. This is about principles. With this decision, Spreedly shows that they can say one thing and then do the exact opposite. And that's troubling.