I’ve been buying Iron Clothing brand shorts from Sams club and Weatherproof pants at Costco for next to nothing. I rotate out 3 pair of each and I get about 4 years out of them. For the price I’m fine buying new after that amount of time. I use the old ones as either around the house work pants or turn them into shop rags for at home oil changes and stuff. Plus my clothes always look newer than everyone else in my shop and in my business (aviation Mx) professional appearance does matter to an extent when dealing with a customer who owns a $2m-16m aircraft.