For many years, I had only one pair of ancient jeans (rarely worn). I tended to wear dress pants at work, and my casual pants were usually khakis, dockers, etc.
After loosing weight I did buy pricey NYDJ black jeans (worn all the time). Also I have about 5 more pair bought at thrift shops and one new pair I really love from Macy’s ($11 fluke, when I was shopping to kill time when hubby had an errand - I think Charter Club)