Damn right mate. Seller on eBay called Revsport. Based in Indiana in the good old US of A. Link here - http://stores.shop.ebay.co.uk/RevSport-Inc__W0QQ_armrsZ1
Cost a pretty penny but well worth it. Got the t-shirt from them a few weeks ago as a test of their service etc. and was so happy with it I plumped for the hoodie too.
T-shirt came letter post and didn't incur the wrath of customs, but the hoodie (and a TP199/Nitro Circus t-shirt) came parcel post so they got hit but it was only £20 extra as they'd marked it with a friendlier value which got under the current £105 import tax threshold so it was only VAT I need to pay.
The only place I've seen the actual Block Teamworks gear here is Schuh selling the trainers. You can get the Pastrana (non Subaru) stuff from a few sites but not the Block stuff.
One thing to note is that the picture Revsport have of the t-shirt is a slightly different design from the one that comes. I'll post some pictures of mine later if you want, but it's the one he has in the videos that I got which has a different Monster logo on it than the pictured one.