Definitely other products at Walmart vary this way, I notice it as a frequent traveler across the US, I think practically all SKUs are fair game. Dehydrated camping meals are one thing I frequently take advantage of when I'm traveling and can grab them for lower price, sometimes up to 50% lower than my 'home' Walmarts.

Interesting to ponder where Bentonville area stores fall on this continuum. (Headquarters of Walmart in a small town in Arkansas) Anyone have anecdata?