Actually, the cost of the push button lever was only about $25. But then there was the problem of not having enough water going into the bowl to maintain the water barrier (trap) in the toilet drain, to keep sewer gas from coming into the house. So, the other part of the toilet tank hardware (I don't know what it is called, but it is the part that rides up and down with the water level, so that the water flowing into the tank turns off at the right level -- whatever that thing is called) had to also be replaced. The cost of that was another $25. I don't know if this whole fix is always needed, but that is what they had to do in that situation.