We have bought several Appsumo products before and so far it's been good.

However, Socioboard has not been clear with their description of their plans/ features. We bought the tier 2 with 100 members. But when we add new team members, we are asked to pay monthly charge for each member?

This was not stated. And when we check with Socioboard, the response is "oh you want to terminate, so be it".