Those $72k is equivalent to EUR 45k in Italy (at least, in my region).

You can check it using a "taxes calculator" website: https://it.talent.com/tax-calculator?salary=45000&from=year&... (it's in Italian, sorry). On top of those 45k EUR gross the employer pays 13.5k, so it's 58.5k EUR.

As of now, $72k USD is 59k EUR.

I don't have many data points, but so far I have been offered only one 20 hours/week job (at a salary that was way lower than 45k) and a full-time job which paid for more than 45k (but since I was studying, I didn't accept it).