I know the best place for getting BTS merch. It’s an online printing store called Heights DTG Printing. They deal in custom t shirt printing, but they have some ready-made print designs as well. I ordered their Bangtan BTS Black t shirtfor myself and my friend, and I’m in love with it. Best 50 bucks I spent as a BTS fan! I even wore it to their concert once. Check out their designs on their website.