Where can I find cheap sweatshirts and sweatpants?

You can find cheap sweatshirts and sweatpants at department stores like Walmart, Target, and Kohls for a cheaper price. However, my advice to you is just to wait until the clearance at the end of the season (end of September/ early October). Then, you can get all of the sweatshirts you love for about half the price. You can also try Plato's Closet. I have never been. But they sell slightly used clothes in perfect condition from only name brands at really cheap prices. Good luck!