There is a regional chain here (Meijers) that has it. They have it for $7.39 for 10#'s. It will be interesting to see how naked whiz responds.
The one thing about small pieces is they do help you pack your ring tighter. I have another grate turned 90º so the small pieces don't fall through.
I was just hoping the Frontier was not related to the Cowboy Lump. Small pieces of hard wood, good. Small pieces of plywood, bad.