Smoky Mountain Smokers still has them, but they not longer print anything on the boards.
The ruler was handy.
cutandtoss.com does print on them, and will also do custom printing. Looking at my old SMS printed board and the cutandtoss board, the printing is exactly the same down to the patent number, so it is likely that cutandtoss is the source for SMS, or they are both getting them from the same place. It's the same product.
For me the boards from SMS (even with shipping) are less expensive than cutandtoss.