Why are CVS receipts so long? (2018)

To get one of the iconically long CVS receipts, you need to use your ExtraCare card, which means you need to be an ExtraCare member. Given this alignment of the stars, it seemed the only thing to do was investigate by buying a lot of cough drops from a variety of chain drugstores, plus a grocery store, and compare receipts: Rite Aid, Duane Reade, and Stop Shop, in addition to CVS. The difference in CVS receipts is 39 inches, or 3.25 feet.

Source: www.vox.com