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More marketplacesAmazon creatine sales jumped 90% to $721M in a year, and the brand with 521,411 reviews is losing shareAmazon FBA newsAmazon's top 10,000 sellers are now 56% Chinese, but US sellers still own 93% of top 100 salesMore marketplacesSuja Life stock has lost more than half its value since its May 2026 IPO, even as sales keep growingWalmart seller newsWalmart opens Walmart.com to outside AI shopping agents with Agent Gateway and Agent Profiles, October 2026Amazon Ads newsAmazon FTC lawsuit: what the ad surcharge claims mean for advertisersAmazon Ads newsAmazon Seller Assistant AI in 2026: automations, memory, ads and the Claude pluginPrime Day newsAmazon Black Friday 2026: what Amazon has confirmed for sellers, and what is still unannouncedPolicy updatesAmazon adds dangerous goods questions to listings from October 26, 2026
Amazon seller news October 2026
Every marketplace change we reported in October 2026, newest first. 26 stories.
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