I get mine from Ron at Saint Louis BBQ Store since his shop is 5 minutes from my house. He also sells them on his website though. Plus, he is a brethren member. :-D
Do your math when considering free shipping from others online sites..... Many offer free shipping but have a higher item price, many times it does not work in your favor. You don't need to worry about this with the BBQ Super Store, the products are cheaper and the shipping prices are down to earth..