When I was a general contractor, it was the richest clients that haggled over the smallest expenses.
Very true. My experience in the aircraft industry...
The people born rich were the worst of the worst to deal with
The people who married rich were less obnoxious but still obnoxious
The celebrity rich (Actors and sports stars) were guarded but generally nice people once they let their public persona and guard down.
The “I earned it through hard work and a business” rich who came from humble beginnings were the greatest and treated EVERYONE wonderfully.