Is a shelf talker a pop?

No, a shelf talker is not a pop. A shelf talker is a promotional tool used in retail stores to attract customers' attention to a particular product or promotion by hanging from the shelf edge or sticking out from the shelf. On the other hand, a pop (point-of-purchase) display is a marketing tactic that showcases products within a store near the checkout or at a high-traffic area to encourage impulse purchases.