Who Decides Who Gets the "Add to Cart" Button? Japan's Regulator Approves Amazon Japan's Plan to Drop a Price-Matching Algorithm Rule

On Amazon Japan, the prominent "Add to Cart" button on a product page sits behind an automatic eligibility rule: only a seller whose price is no higher than the lowest price on other shopping sites gets placed in the "recommended offer" spot. On Nov. 11, Japan's Fair Trade Commission (JFTC) approved a remedy plan from Amazon Japan that changes that practice. The JFTC did not find that Amazon broke the law. It closed the case through its "commitment procedure."

A few terms

"Recommended offer" (Japanese: "osusume shuppin," similar to what is often called the Buy Box): many sellers can offer the same item, but a product page is a single page, and only the selected offer is shown with the "Add to Cart" and "Buy Now" buttons. Japanese outlet TechnoEdge, citing the JFTC, says most purchases on Amazon go through the recommended offer and sellers widely believe that missing it sharply cuts sales.

"Commitment procedure": a way to close a case under Japan's antimonopoly law. The company under suspicion proposes a remedy plan; if the regulator approves, it makes no finding of violation and issues no penalty, but monitors implementation. If the company fails to comply, the investigation can be reopened.

What happened

According to TechnoEdge (18:43 Japan time on Nov. 11) and TV Asahi (17:53 Japan time on Nov. 11): since September 2019, Amazon Japan used an algorithm to decide whether a seller could win the recommended-offer spot, and the seller's price had to be no higher than the lowest price on other shopping sites Amazon considers competitors. The JFTC suspected this left sellers unable to set prices freely, with some forced to sell at a loss, and made it hard for rival sites to compete through price cuts, points or sales, possibly violating the Antimonopoly Act. The JFTC notified Amazon Japan of the commitment procedure on Nov. 4 and approved its plan on Nov. 11.

At the core of the plan: when no offer meets the "competitive price" condition, Amazon must prominently show the purchasable offer with the lowest total price including shipping, with a way to buy it, on the product page. The change must go live within six months and run for five years. Amazon Japan must also write antitrust compliance guidelines, run regular training and audits, and be monitored by a third party approved by the JFTC, with yearly reports. TV Asahi quotes Amazon Japan as saying it will "steadily carry out the commitment plan and continue to comply with the antimonopoly law."

Per TechnoEdge, the JFTC expects sellers to be able to set prices more in line with their own costs and profits, and rival shopping sites to cut prices and run points and sales more actively; Chinese outlet Jiemian (15:14 Beijing time on Nov. 11) also reported the approval. MLex (06:30 GMT on Nov. 11) reports that the Japanese regulator called it the first change to this practice secured through regulatory action anywhere in the world, while similar investigations and lawsuits continue in the US, Germany and elsewhere.

What it means for everyday people

For shoppers in Japan, within six months you may more easily see the cheapest offer actually available on Amazon on a product page, rather than only the offer from a seller who earned the recommended spot. For sellers, there is less pressure to chase other sites' lowest prices. For online shoppers everywhere, the lesson is that the "best price" you see is often picked by a platform algorithm following rules, and those rules can shape prices and choices. Note that no violation was found here, and the real effect can only be judged once the change goes live.

Original sources published: Jiemian, Nov. 11, 2026, 15:14 Beijing time / 2:14 AM EST; MLex, Nov. 11, 2026, 14:30 Beijing time / 1:30 AM EST; TV Asahi, Nov. 11, 2026, 16:53 Beijing time / 3:53 AM EST; TechnoEdge via Yahoo! News Japan, Nov. 11, 2026, 17:43 Beijing time / 4:43 AM EST