29. Join Their Loyalty Program
Many thrift stores will have a loyalty program. You can collect stamps every time you shop there, and it will help add up to a discount in the future. Goodwill has a loyalty program where you shop a certain number of times and receive 50% off your total order. They also have a Goodwill app that will help you find thrift shop locations and specials.
Privately owned thrift shops sometimes have their own loyalty programs. But it’s most likely going to be the old school cardboard punch cards that you leave in your wallet. Depending on how much you go shopping there, this could be worth it if you’re saving up for a larger purchase. I personally know people who save up their punch card all spring and summer, and cash in the sales price when it’s time to go back to school shopping for their kids.