'Dynamic Pricing' at Major Grocery Chain Can Vary Prices Depending on Your Income | The New York Sun
https://www.nysun.com/article/dynamic-pricing-at-major-grocery-chain-can-vary-prices-depending-on-your-incomePrice discrimination - Wikipedia
https://en.wikipedia.org/wiki/Price_discriminationUS targets surging grocery prices in latest probe
https://new.reddit.com/r/news/comments/1eiqjbh/us_targets_surging_grocery_prices_in_latest_probe/