I've read that Michelangelo was paid 400 gold florins for the realization of the David in 1504. I wasn't able to find sources on how much was the gold florin worth. What could I buy with 400 florins during that age?

by Kaseenee
QuickSpore

While we wait for newer answers, you might find this answer from five years back by /u/historianLA to be of interest.