Same product but "may" be packaged differently. There's a bit of trickery going on as many manufactures customize package sizes for their key retail accounts.<quoted text>
A roll of Bounty towels is the exact same product whether purchased in a convenience store or at a cheaper price at Walmart.
Conversely, some of the highest priced department stores in the country sell products made in Asian sweatshops.
Your argument defies all logic.
Ralston Purina Tidy Cats litter is packaged in a dozen different sized yet similar looking containers. Matter of fact Purina pet products are among the most widely ranging in price from one store to another.
WalMart doesn't always win the price battle particularly with the coupon crowd but they usually win the selection battle.