[Volundr]

If you want to run your own push for pennies all you have to do is compile the client yourself.

[emptysongglass]

I'm not going to recompile and redistribute a binary outside the Play Store.

[Volundr]

Then your piggybacking on their infrastructure. I don't think they are unreasonable. "It can be done for pennies, but I won't" sort of implies that it does indeed take more than pennies worth of effort.