In terms of purchasing power, here is what the florin can buy in about 1430’s:
A "handsome palazzo" can be bought for a thousand florins.
A maidservant costs about ten florins a year.
A man can live very comfortably with an income of 150 florins.
A "cashier" in the Medici bank is paid with forty florins a year.
An "apprentice" in the Medici bank earns twenty florins a year.
The Medici Palace was worth about five thousand florins.