A viral thread on X says Walmart and Kroger are wiring their aisles for Uber-style surge pricing. One example: bottled water jumps 20% when it hits 90 degrees. Another: milk and bread cost more at 5 p.m., when working parents finally get to the store.
The hardware is real, and it is spreading fast. The surge pricing, so far, is not proven. You should know the difference, because your protection depends on it.
What the post claims
The thread, posted Wednesday by an account called Jaxon (@jaxoncoder), has drawn about 2.5 million views. It says paper price tags are being “ripped off grocery shelves and replaced with cloud-connected digital screens.” It also says prices can be changed “wirelessly in seconds from a central corporate dashboard.” It quotes an unnamed “former retail pricing director” who says families will lose money “simply because both parents work until 5 PM.”
The thread names no stores, dates or receipts where any of that surge pricing happened, and the pricing director is never identified. The next day the same account opened a thread about Spotify the same way, with an unnamed analyst it says it met “over drinks.”
What is actually confirmed
Walmart is putting digital shelf labels in its U.S. stores, and the labels are made by France’s VusionGroup. In June 2024 Walmart announced it would have them in 2,300 stores by 2026. That figure covered all of its stores, not only supercenters, and the deadline was 2026, not 2027 as the post says. In December 2024 Vusion announced an extension covering Walmart’s entire fleet of about 4,600 U.S. stores. Each of Vusion’s two 2024 Walmart contract announcements came with roughly €1 billion in orders.
Kroger told the Cincinnati Enquirer in June that nearly one in four of its stores have electronic labels. It also said the rollout has started in almost all of its 21 divisions. The “Microsoft-backed EDGE” in the post goes back to a 2019 pilot.
The post’s “60 million” tags is real in one sense. It was the number of labels Walmart planned for the first 500 stores of its rollout, as reported in May 2023. I could not find a confirmed count of how many digital tags are on U.S. shelves today.
What the companies say
Both chains deny surge pricing, and they deny it in writing.
“Kroger does not and has never engaged in ‘surge pricing,'” Kroger’s Paula Kash wrote to Sen. Elizabeth Warren, according to USA Today.
In an Oct. 5 letter, Walmart executive Dan Bartlett answered Groundwork Collaborative, an advocacy group that has accused the company of building the tools for dynamic pricing. “We do not engage in dynamic pricing, raising prices in response to a hot afternoon or an approaching snowstorm,” he wrote, and added, “Walmart does not and will not use digital shelf labels for individual or dynamic pricing.”
There is outside evidence behind them, too. A working paper by economists at UC San Diego, UT Austin and Northwestern looked at 114 stores in four states that switched to electronic labels between October 2022 and mid-2024. It found that short-lived price spikes were extremely rare both before and after the switch.
There are still reasons to keep watching.
Groundwork found a Walmart patent, granted in 2023, saying that “the labels and prices may be changed in a dynamic fashion” based on what is in a shopper’s cart. Walmart says it will not use or renew that patent.
On Oct. 28 the Federal Trade Commission ordered Walmart, Target and seven other companies to explain how they use personal data and loyalty programs to set prices. “Consumers deserve to know whether companies use their web surfing habits or other personal data to estimate the highest price they can charge each consumer,” FTC Chairman Andrew Ferguson said.
So the honest answer is this: the chains have installed the ability to change prices in minutes, and they say they are not using it to surge prices. Nobody has produced dated, store-by-store proof that they are.
What the law says about price gouging
Raising prices on an ordinary day is generally legal in America. Price gouging is a different thing.
According to the National Conference of State Legislatures, 39 states and D.C. have laws against gouging during a declared emergency or disaster. They include:
- California (Penal Code 396): once an emergency is declared, sellers generally cannot raise prices on food, water, batteries and other necessities by more than 10%, usually for 30 days. Violators face up to a year in jail and a $10,000 fine.
- Texas: once the governor or president declares a disaster, it is illegal to charge an “exorbitant or excessive price” for food, fuel, medicine and other necessities.
- Florida and Alabama: these states compare emergency prices with the 30 days before the declaration.
- North Carolina, Virginia, Georgia and Pennsylvania: these states have their own emergency rules.
These laws do not care whether the price is on paper or on a screen. If a shelf tag jumps after a disaster declaration, the same rules apply.
States are now writing rules for the screens themselves.
- Vermont: since July 1, it has been illegal to use electronic shelf labels “to increase prices” while a store is open, except to fix a documented error.
- New Jersey: Gov. Mikie Sherrill signed the Fair Price Protection Act in July. It bans grocery prices based on personal data and puts a one-year moratorium on new electronic labels.
- Maryland: it now bans personalized grocery pricing based on personal data.
- New York: the Senate passed a ban on the labels in food and drug stores, but the Assembly never voted on it.
- Congress: Rep. Rashida Tlaib’s Stop Price Gouging in Grocery Stores Act would ban the labels in large grocery stores. It has not moved out of committee.
In Washington there is no general federal ban on price gouging.
Stocking up: why timing matters
This is where self-reliant households have the advantage.
Even if no chain ever surges a price, a storm still empties the shelves. Water, batteries, propane and canned goods disappear first. What digital tags change is how quickly a price can move. A paper tag took an associate days to replace. A screen can change in minutes, and in most states gouging laws do not apply until an official emergency is declared.
Do not wait for the forecast. Buy your water, batteries, lamp oil and shelf-stable food on an ordinary Tuesday, then rotate through them. Learn your normal prices for the 20 things you buy most. If a price jumps during an emergency, take a photo of the shelf tag with the time stamp, keep your receipt, and report it to your state attorney general.
What happens to digital tags in a power outage
Most of these tags use e-paper, the same display technology as an e-reader. E Ink, the company that makes it, says an image on its screens “will be retained even when all power sources are removed.”
Vusion’s labels run on replaceable coin-cell batteries and get their prices over a 2.4 GHz radio link from access points inside the store. If the store’s power or network goes down, a tag should keep showing its last price, but it cannot get a new one until the system comes back. In practice the shelf price stops changing during the outage.
Checkout is the weak spot. Registers, scanners and card readers need power and a connection. Ready.gov warns that ATMs and credit card machines may not work in an extended outage. Keep small bills at home.
The price you pay comes from the register’s system, not the tag. That means the two can disagree, especially right after power returns. Check your receipt. In Massachusetts, if you are charged more than the lowest price displayed on a grocery item of $10 or less, the first one is free. Michigan’s scanner law entitles you to the difference, and the store has to pay a bonus of up to $5 if it wants to avoid being sued.
The thread’s other advice is to fill your pickup cart early in the week to “lock” a lower price and to turn off Bluetooth in store apps. It did not show any evidence that either step changes what you pay.
The bottom line
I do not like a grocery aisle that can be repriced from a laptop in minutes. Families on tight budgets deserve prices that sit still long enough to plan a week of meals. Vermont got it right: if a chain says it will never raise a price while you are standing in the aisle, it should not mind that promise being the law.
But I will not tell you something is happening when the evidence says it is not. Right now the proof of grocery surge pricing is a viral thread with an anonymous source. Against it stand written denials from both chains, a study of 114 stores, and an FTC inquiry that will put those denials to the test. However, we know that grocery stores work on slim margins and are under pressure to perform. Who’s to say when they will deviate from their promise?
Hold Walmart and Kroger to their own words. If you ever see a price climb while you are in the store, take a photo, keep the receipt and report it.
The best defense is still the oldest one: a stocked pantry bought before the storm, cash in the drawer, and knowing what you normally pay.