Once upon a time, I hunted all over creation trying to find a good Punisher shirt. I finally ended up at a biker kiosk at the mall. I didn't even know there were biker kiosks. To me, the image of somebody who dresses that hardcore picking up his spikes off a fake wood kiosk at the mall across from the pretzel place just seemed odd.
But there it was.
Now, there's no need for you to hunt all over your town looking in kiosks. Check out SuperHeroStuff.com for whatever kinds of T-shirts you want. You can't go wrong with a good Punisher shirt, but they've got everything from Green Lantern shirts to shirts from NBC's Heroes.
They've got other stuff, too, like Superhero statues and Superhero graphic novels, but it's the shirts that are the name of the game at this place.
Go peek around.