You are asking too broad a question. Men, women or children? Multiply by casual, play, dress, skirt, suits, pants and 300 other types of clothing. I get your question. I do. But there is no answer as the math is too high.

If you have any hope of finding great items at thrift stores you only hope is a smart phone while shopping and even then its a mixed bag as you can find a titanic quality Brioni suit that sold for $10,000 new, but it was sold new in 1984 with collars wider than the tires on your car. Quality does not mean you can actually wear it as fashion plays a role. The stories you read on the internet about people finding $10 Alden shell cordovan boots and $15 Jean Paul Gautier sweaters are by those who are hyper focused/smart in one clothing type and are in an area with fantastic thrift stores.