Bob- I went checking on their website. If they're selling it, they've not got it up on the site yet. Call and ask.
Barret's presentation was interesting, and full of historical goodies. Woodburytypes were the original mechanical means of mass reproduction of photographic images. At their invention, they were the fastest way to mechanically reproduce images. By their decline, screen-based image reproduction had taken over, and whereas you could make perhaps 1000 Woodburytype prints in a week, you could do that many in an hour on a high-speed screen-based printing press. Also, because of the relief of the woodburytype printing plate, relatively high pressures were involved, which limited the size of the image that could be produced.