Both The Hardwood Store and Wall Lumber carry it. The links to their stores are on our wood suppliers list, scroll down to region 2. Wow that is some pricy stuff
You might try this place in SC. They specialize in exotic woods for decks, flooring, etc., but I've bought some stuff to use in an outdoor grill area. Don't know if they have 8/4 material, but they might. If you call them, talk to a guy named George. He was very helpful, and honest. :wsmile: