My SD nerdy Gundam/Street Fighter fans/friends. Most of the popular ones are sold out of M-XL sizes. That's why they are so cheap. It has been these prices for a few weeks now. I'm surprised no one else posted this. $5.90 for an official Gundam T-Shirt is a steal.
Regular price $14.90. Free shipping $75+
Be sure to click on the photo of the T-shirt, some of them have graphics in the back.