Lululemon is tech wear so that’s somewhat surprising. I’d say that if you’re biking, you probably don’t want formal slacks. But more expensive clothes are not inherently more durable. It’s a good way to sell clothes to people who need an objective justification to spend more, but it’s not always true. You spend more because you want a specific aesthetic, you want clothes that fit a certain way, you want stuff produced ethically and not in sweatshops. Sometimes they’re more durable but not always. Linen for instance is always fragile, no matter how expensive.