> Anybody knows how much of this fee is pure profit for them?
> Sounds like an arbitrary number far from their actual costs
Before you begrudge Google for making a profit, perhaps you could elaborate on what you sell or plan to sell online and how much pure profit you intend to make.
Games virtual currency, in which the pure profit margin is very high. But i am not google / apple / facebook. I find the fees all of them incur to be out of touch with reality, and as more and more payment solutions become available i expect them to drop.