Kropotkin goes into in “the conquest of bread”, his argument is that our main priority as a society should be getting everyone’s needs met. Once everyone’s needs are met wages aren’t really necessary as you are being provided food, housing etc. based on your need. At that point wages and money can only cause problems in the commune as it would only be for accumulation, and if someone starts accumulating money they also accumulate power, which challenges the equality of everyone in the commune.

Maybe the commune can collectively hold currency or gold to exchange with other communes, but if you give individuals that currency that is private property ( in the Marxist sense ) and should be removed to protect anarchy.

I can only guess that the alternative is a standard government stipend.

The only way this can work is if there is no bourgeoisie.

Nobody gets paid, everything is free, boom! Utopia. Easy.