Wedi Board Distributors

I am looking for distributors-purchase of wedi board in the Tucson, Arizona area. What is the cost and size of each sheet? Any help will be appreciated.
Thank you.

Here's the people that handle WEDI distribution in Arizona. I've used plenty of it and it's hard to beat it.

GSTA
8324 Luzon Ave
Sacramento, CA 95825
Phone: +1 (916.387).8500
Fax: +1 (916.387).8300
Email: info@gstallc.com
Www.gstallc.com

I've been looking for a wedi distributor and in my search have come across this post. Although quite an old post I'm in Tucson and thought I'd give it a try and ask if you had any luck.