According to South China Morning Post, Apple’s online stores on e-commerce platform JD.com showed a markdown of 800 yuan for iPhone 14 Pro and Pro Max models, with an additional 50 yuan off if the buyer became a member of the online store.

Source: https://www.canindia.com/apple-cuts-iphone-14-models-prices-by-up-to-125-in-china-to-boost-sales/

For a grocery store to be able to change prices throughout the day means either paying someone to apply markdown stickers in real time, or investing in the technology to automatically adjust the price displayed.

Source: https://www.eater.com/23882230/supermarket-grocery-store-food-waste-dynamic-pricing-price-cuts