Decodo’s index tallied almost equal numbers of increases and decreases among tracked U.S. online listings during 2025, giving a narrow view of the direction of price changes.
The index recorded 271,968 increases and 270,977 decreases, a difference of 991. Together, the two directional counts reach 542,945; Decodo lists 542,946 changes overall, leaving a one-count gap.
Across 40 countries, Decodo monitored more than 1,440 products on more than 120 e-commerce sites from January through December 2025. Its methodology says price observations were taken at four-hour intervals. At each website, researchers selected 12 products spanning four categories.
The U.S. total reflects Decodo’s tracked listings, rather than every retail price in the country. The reported directions do not indicate how large an adjustment was or what prompted it. They also do not show whether customers received different prices or promotions.
Katie Thomas, who heads Kearney’s internal think tank on consumer behavior, said algorithms, bots and AI raise questions about how pricing power is shared between companies and shoppers.
