APAD: He who pays the piper calls the tune

Meaning:

Decisions are made by those who are in financial control

 

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Not all decisions are, however. The horde that buy marathon tickets and stampede

the roads at some point may wish it were that simple. But they have to cross the

finish line to get a medal.

 

The related phrase "pay the piper" means to bear the consequences of an action

or activity that one has enjoyed: we will have to pay the piper, and the price

is apt to be a high one. (New Oxford American Dictionary)

 

Two idioms from one proverb. That's a good deal!