go to the website here:
ROCKWORLDEAST
here's the page with the info about the free shirt:
ROCKWORLDEAST - ROCKWORLDEAST, T-Shirt, Guitar & Cleavers 
the website says you need to spend $100, but you only have to spend $70, we are giving everyone reading these boards a better deal! just remember to tell us what size you want....
you'll find a ton of great merch from a ton of great bands here. check it out, get your t-shirt.