My T-Shirts are available in a few different places.
Most are available thru my RedBubble Shop. Check here first. Redbubble has amazing quality and great service.
And still others are thru Joe's Shirt Shop supplied by major manufacturers such as The Mountain. These shirts can also be found at local shops such as Walmart, and Cracker Barrel or where ever The Mountain shirts are sold.
Lastly Off World Designs has a few steampunk designs too. Availabilty seems to be spotty.