Man, I wanted so badly to do SHC shirts about a year ago, but we were worred about copyright issues. I would think at 0% profit it wouldn't be a problem though - its free advertising.
AND WE KNOW SONY WON'T PAY FOR ADVERTISING, don't we.
Anyone can make just about any product and put it up for sale there. You can adjust your commission rate, but I set mine to 0% so I don't profit at all. Please, if you want to buy them, do... it's just for fun, but where else are you going to get a shirt that is so specific to a memory like this?
Kudos for you good sir.