I shop Goodwill a lot. There's at least one goodwill in every town, and I have found some major deals in those shops.
Often, I don't find much that looks better quality than my things, but they are often in better condition than my things. My lifestyle chews up clothes, and fast; so it just makes sense to buy thrifted for my everyday stuff.
I also shop consignment for the stuff that I don't get to wear a lot. It makes high-end brands accessible to me at a price point that makes sense for something I'm not going to wear all the time.
Having so much of my wardrobe be thrifted or consigned does take a lot of time and effort, because I have to shift through mountains of blah to find those pieces I think are worth buying. It's become my hobby, which is better than some of the things I used to do for fun LOL