BigCatDerek Merch review?

Hi I've been wanting to buy the crew-neck that says "killplaykillplaykillplay" but I wanted to hear some reviews first? There aren't exactly any on the website. I was just wondering if the crew-neck seemed to run smaller or larger than normal? Like, I wear a small but if it's really big I wont enjoy wearing it around as much, you know? Plus it's pretty expensive so I want to make sure I'll wear it to support BigCatDerek and CARE! ALSO about t-shirts? Preferably the woman sized shirts, do they tend to run smaller or larger? Also does the white t-shirt tend to be too see-through? Any reviews on any product would be appreciated really :)