I don't know if there is a difference in products, but I would look for a retailer going out of business. I have seen two in Raleigh lately where I tried to buy the wall racks - One was a golf store (2nd Swing) in Brier Creek that had already sold the slat board and the other was a baby store in Traingle Town center that said the boards were glued to the wall and could not be removed without damage. If you can find a retailer closing down, I think they sell it pretty cheap. Again, I don't know that a retailer uses the same strength board that might be available elsewhere.
It would be nice to have on a wall in the shop . . . . .