They did not have coinage, but they already had prices and also professional musicians (besides other non-producing professionals which appeared there for the first time, i.e. judges, medical doctors, accountants and prostitutes) (obviously, chiefs and priests existed much time before written history).

Initially the prices were expressed as weights of precious metals.

The coins, which allowed simpler payments, without the use of weighing scales, appeared thousands of years later after the prices, probably in Lydia in the first millennium BC.