Lots of folks use these to crush their grains.. I built a grain mill with one and was going to do a second one for a buddy but he decided to go another route..
Here's the video where I built the one for the brewery.. Skip to about 3:45 to get past all the talking...
As you can see in the link below it's $49.99 at Harbor Freight and you would more than likely have to pay taxes and/or shipping.
Brand new, never taken out of the box.