Surveillance Pricing: Is Your Holiday Cart Price Just for You?

Short answer: Different shoppers seeing different prices for the same item is documented, but only in narrow cases, and the cause is disputed. Nobody has shown that big retailers broadly charge individuals more based on personal data. New state laws and a proposed federal enforcement policy are real, so it is worth a quick check of your own cart, not a panic.

You have probably seen the posts claiming that store tags or apps now price you personally. Some of it is rumor. Some of it is not. Here is the line between the two, as of Nov. 5, 2026.

What's Actually Real Here

A Consumer Reports-led study found different prices for identical grocery items. A Dec. 9, 2025 press release from Consumer Reports and the Groundwork Collaborative said that nearly three-quarters of tested items showed different prices to different shoppers on Instacart. Average basket totals varied about 7% for identical items at the same location and time, and the highest price for an item was up to 23% above the lowest. The release gave one example: a dozen eggs at one Washington, D.C. store listed at five different prices, from $3.99 to $4.79. The authors estimated the gap could add up to about $1,200 a year for a household of four.

The sample is less clear than the headline. The same release cites "more than 400" shoppers in four cities and, elsewhere, 193 submissions analyzed, and it does not reconcile the two. It also did not give test dates. This is advocacy-backed research, not a peer-reviewed paper, so treat the exact percentages as indicative.

Instacart ended the tests and denies using personal data. According to a Nasdaq article dated Dec. 23, 2025, Instacart said retailers could no longer use the Eversight tool to test prices, because the same item priced differently at the same store confused shoppers and eroded trust. It said retailers, not Instacart, set item prices and that the system did not use personal or behavioral data. The study's authors and Instacart disagree on the cause. The article also relays a Reuters report that the Federal Trade Commission (FTC) issued a civil investigative demand; we found no FTC statement confirming it.

The FTC has described what the technology can do. In a Jan. 17, 2025 release, FTC staff said that pricing intermediaries can use data such as location, demographics, browsing and shopping history, and even mouse movements and items left in a cart. The intermediaries worked with at least 250 clients. The FTC called this an initial review of a limited set of documents, and it published only hypothetical examples. That shows capability, not proof that any named store is doing it.

Law is moving. Maryland's Protection From Predatory Pricing Act, signed April 28, 2026 and effective Oct. 1, 2026, bars large food retailers and delivery services from using personal data to set higher food prices for individuals, with exceptions for loyalty programs, cost-based differences and consented data (per law firm Skadden). New Jersey's Fair Price Protection Act, signed July 23, 2026, takes effect Aug. 1, 2027 and also covers electronic shelf labels. Skadden reports that Connecticut passed a broader law on May 27, 2026, effective July 1, 2027, covering all retailers and delivery services. Outlets disagree on which state was "first," so we do not rank them. On the federal side, the FTC proposed a policy statement on Aug. 19, 2026 saying that undisclosed personalized pricing could be deceptive. It is a proposal, not a ban, according to Skadden's summary.

Where the Hype Outruns the Reality

"Store shelf tags scan your face." FOX 29 Philadelphia (Oct. 18, 2026, updated Oct. 20) reports that social posts claimed Walmart's electronic shelf labels can scan shoppers' faces or phones. A Kearney consumer analyst quoted there said such claims were false. Walmart's CEO said, "We price the product, not the person."

Dynamic pricing is not the same as personal pricing. Prices that change with demand, time or location (like airfares or ride-hailing) are old and legal. Surveillance pricing means different people get different prices based on who they are or what they have done. The FOX 29 piece notes it is unclear how widely businesses use personal data to personalize prices.

Retailers say the concerns are overstated. Target, which paid $5 million in civil penalties in a 2022 California case over price differences between store and app, says that case was about channels, not individuals, and that it does not use personal data to set individualized prices. The National Retail Federation calls algorithmic pricing a modern version of long-used practices.

What nobody has shown. We found no published evidence that a major retailer sets higher prices for individual shoppers using personal data. We also found no study of whether this happens in non-grocery online carts. The Consumer Reports work covers groceries via one platform.

A Practical Approach

No trick guarantees a lower price. These steps just help you notice differences.

1. Compare logged in and logged out. Open the same product in a private window and in your account. If the prices differ, screenshot both with the time.
2. Compare app and website, and two devices. Sellers legitimately run different prices by channel, so note the difference rather than assuming personal pricing.
3. Use price-history trackers. Tools such as Keepa or CamelCamelCamel (Amazon), or a browser price-tracking feature, show whether today's price is normal. See our Black Friday by country guide and the October Prime Day check for how list prices get framed. Our real-deals checking guide covers this in more depth.
4. Do not rely on clearing cookies. We found no evidence that it reliably lowers prices. Compare instead.
5. Check the program rules. Loyalty prices are generally allowed under the laws above if disclosed. Read what data a loyalty app collects.
6. Report suspected problems. You can file with your state attorney general or the FTC. This is general information, not legal advice.

FAQ

Is surveillance pricing illegal? Not everywhere. Maryland's law took effect Oct. 1, 2026 for food retailers and delivery services, and New Jersey's starts Aug. 1, 2027. Elsewhere it depends on state law and on whether a practice is deceptive.

Did Instacart charge people different prices? The Consumer Reports-led study found different prices for identical items. Instacart said retailers set prices, that it ran limited tests, and that no personal data was used, and it ended the tests in December 2025.

Do store electronic shelf labels change prices per shopper? We found no evidence that they do. Walmart says it does not price individuals, and a Kearney analyst said the face-scanning claims were false. New Jersey's law does restrict labels tied to surveillance pricing.

Does incognito mode get me a better price? Not reliably. Compare logged-in and logged-out views and track price history instead.

Is this a holiday-only issue? Not really, but peak shopping is when people compare most and when prices move most.

Things change quickly. This article reflects what was publicly known when it was written or last updated, so details such as prices, availability, rules and product specs may have changed since. Always check the official source before you buy or decide.

Sources

• New Report Exposes Instacart's Hidden Price Games (Consumer Reports, Dec. 9, 2025)
• Instacart Halts AI Pricing Experiments After Study and Lawmaker Backlash (Nasdaq, Dec. 23, 2025)
• FTC Surveillance Pricing Study Indicates Wide Range of Personal Data Used to Set Individualized Consumer Prices (FTC, Jan. 17, 2025)
• Maryland Becomes the First State to Restrict Surveillance Pricing (Skadden, May 2026)
• New Jersey Enacts First-in-the-Nation Surveillance Pricing Law (Skadden, July 2026)
• New Jersey governor signs dynamic pricing ban into law (Supermarket News, July 23, 2026)
• FTC Proposes Enforcement Policy Statement on Personalized Pricing (Skadden, Aug. 28, 2026)
• Customer concern growing as US retailers adopt next-generation pricing tools (FOX 29 Philadelphia, Oct. 18, 2026)
• CamelCamelCamel vs Keepa: Which Price Tracker is Best? (ecommerce-platforms.com, 2024)