Psvensson: How much does a supply of Paterson's photocolor cost you? I've heard good things about this brand before.

With regard to replenishment, in addition to adding a certain amount of fresh developer, do you also have to take out a certain amount of used developer? Can replenishment of a given solution continue ad infinitum or is there a limit to the number of replenishments a given solution can endure?

Regards.
~Karl Borowski