and your prices I find that $/sf is
so half cost between 49 and 63 cents/sf.
With the quantities that HD buys they can probably dictate to the factory what level of quality they want for the batches they buy.
Same with their fasteners (Crown bolts?).
Using quadrille paper you could make scale drawings for each candidate underlayment roll to get some idea of ease of installation.
This is not as easy as it sounds - just listing all the ways to lay out these different size rolls is difficult and there are computer programs to search for an optimum layout (the "brute force/exhaustive search" approach), optimum according to some user-specified criterion.