Kinda depends. I'm still relatively beginner so I make a lot of stuff from thrifted fabrics, for example I just made a matching top and skirt from a bedding set that cost me 50p. Obviously it does take time but I enjoy it so don't begrudge time spent, plus I'm getting much faster with more practise!

But it's also the fact that you're learning to make things that actually fit you, and that work for you. So they're not wearing through on parts that are too tight, or being forgotten in the bottom of the wardrobe because you don't feel comfy in them. And if anything does start to fall apart, you've got the skills to repair.

I know a lot of sewists who make themselves very expensive items, but they know what they're doing and are making much better quality clothes than you'd get in a shop so they'll last basically forever.