Anecdotally, VAS is great when it works. Seems to work reliably enough for me at Walgreens and Jimmy Johns as two examples. (Though I often forget it works at W

Anecdotally, VAS is great when it works. Seems to work reliably enough for me at Walgreens and Jimmy Johns as two examples. (Though I often forget it works at Walgreens because they heavily encourage the two-step procedure because the cashier likes to make sure you have the loyalty card for some reason before finalizing the total, even when no savings would have been involved.)