We are having some issues with our T-shirt printer, so the shirts are pulled off the store until we can get it fixed. We are going to change pricing before they go back up, the black shirts are costing us a little more to buy than whites, and we are going to raise the prices on both the shirts and the mouse pads (they haven't been mentioned here as we were just getting them mocked up and on the web site) and donate the additional (plus some) to Geekhack.
Additionally we have some larger mouse pads that we are going to try to get listed in the next few weeks, so if you prefer a large mouse pad you may want to wait.