The Seattle City Council passed the Fair Pricing and Transparency Act (CB 121267), making it the first U.S. city to explicitly ban personalized pricing on groceries and essential goods. The bill, which awaits Mayor Wilson's signature, prohibits retailers from using a consumer's personal data — browsing history, location, inferred income, family size, health conditions — to change the price they see at checkout. It preserves standard discounting and loyalty programs but draws a hard line at individualized price manipulation. The legislation lands in a policy window opened by investigations that made the mechanism visible. Consumer Reports found that Kroger maintained 62-page data profiles on individual shoppers, cataloging inferences about income, education, gender, and household composition. A separate CR investigation had nearly 400 consumers shop the same Instacart basket simultaneously and found algorithmic pricing differences as high as 23% on identical products from the same store. The annualized cost to families: up to $1,200. Instacart subsequently ended its variable-pricing program but left a backdoor — allowing grocery retailers and food brands to run their own promotional experiments through the platform. Seattle is not acting alone. Maryland, Connecticut, and New Jersey have already signed state-level surveillance pricing bans into law. But the city-level move matters because it tests whether municipal governments can enforce data-pricing rules in the absence of federal action, and it creates a compliance precedent for grocers operating across jurisdictions. The core extraction mechanism is straightforward: retailers and platforms harvest behavioral and demographic data at near-zero marginal cost, then use that data to charge consumers the maximum each individual will tolerate. The value flows from households to data intermediaries and platform operators. The information asymmetry is enormous — the seller knows the buyer's price sensitivity better than the buyer does. The bill's design is notable for what it permits. Loyalty discounts, volume pricing, and standard promotional practices remain legal. The ban targets specifically the use of personal data profiles to set individualized prices — the distinction between "everyone gets 10% off" and "you specifically pay 23% more because our model says you will." This is a scalpel, not a sledgehammer. The transparency requirements may prove as important as the pricing ban itself. Mandated disclosure around how discounts work and limitations on consumer profiling create a regulatory framework that other cities can adopt without reinventing the policy architecture. Consumer Reports, which provided technical assistance throughout the drafting process, is clearly building a template. The twenty-year question is whether algorithmic pricing migrates from groceries to every consumer transaction — housing, insurance, utilities, transportation. Uber and Lyft already charge different customers different prices for identical rides. Without structural prohibition, the default trajectory is total price discrimination across all markets where sellers have data advantages, which is increasingly all markets.