Wal-Mart prices from store to store in a given location may match, but I assure you that out here in rural America, we pay considerably more for most items than the people who live in bigger markets where Wally World has competition.
My son-in-law was in their manager training program for awhile and he saw first hand how much prices varied from the bigger stores to the smaller markets. there were two super Wally Worlds within about 50 miles of one of his training locations. If you were spending a hundred dollars or more at one time, it diffinitely paid to drive the 50 miles. 😡