Originally Posted by simsaladimbamba
Aren't there costs for developing or being a developer developing for the MAS? I am currently unsure and too tired to work it out (or too lazy to actually search myself
Of course there are costs, as everything in life. Nothing is free. But it is an open source project, isn't it? Thus is voluntarily. MAS operational costs are non-existent (per Apple, at least) if the app itself is free on MAS. If it is not then they just split the revenue 70/30.
I just think it is a bit misleading doing it this way. But it is personal opinion rather than a fact.