You could use tail, shank, and neck, even cheeks. But, I think the chuck is the best value wise. I think there is a difference between brisket and chuck when pulled, with chuck winning in terms of taste and mouth feel.
I do believe you lose a little more in terms of yield with chuck, as more connective tissue and fat renders. It might be as much as 10% less yield. Caveat, I have only cooked chuck roasts, not a chuck roll. I am a little surprised at the pricing you have there, it is higher than I would have thought for restaurant wholesale.
I'm feeling bearish, and I'm packing a Wusthof Grand Brisket slicer from MABA
"I'm Armenian...perhaps...but then again...maybe not..."