How do you pay devs in a fair manner? The time spent differs each month and everybody has a different productivity level. We can't even quantify the outcome.
100$ have a different value for a student compared to a senior dev, same applies for a German dev vs a Spanish or Hungarian dev.
Let's say I earn 60k€ per year=5000€ per month (before taxes, social insurance etc., that's a medium German salary for an experienced dev and a simple number to calculate) for a 40h week. To take a whole working dev off every week for faf this would mean 1000€ per month.
Many students in Germany live from 400€ per month!
A realistic budget we could spend per month is 300€ max... you don't get an experienced dev not even 50% part time for this. Maybe you get an outsourced call center agent for that...