A good mixture of band / TV / gaming T-shirts heavily reduced at USC. They have official t-shirts from a number of things including Assasins Creed 3, Doctor Who, Bob's Burgers, Back to the Future and quite a few band shirts (Paramore, Alexisonfire etc.).
Don't know how they get away with charging so much for basic delivery (even for click and collect) but if you are getting a few different items it would still be worth it.
Note: If you do click and collect you will get a £5 voucher to use in store.