CoreTrex

News & Insights

Marketplace intelligence, applied

What's changing on Amazon, Walmart, and all other eCommerce marketplaces.

Amazon Peak Fees Hit October 15News

Amazon Peak Fees Hit October 15

Holiday peak FBA fees return Oct 15 through Jan 14 at +$0.32 per unit, plus a 3.5% fuel surcharge. BFCM inbound deadlines start Oct 14 for AWD.

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Amazon Wants $1M Insurance by November 2News

Amazon Wants $1M Insurance by November 2

Enhanced safety category sellers need $1M liability cover by November 2, even under $10k a month. China-based sellers must use Amazon Insurance Accelerator.

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Walmart App Keys Die October 1News

Walmart App Keys Die October 1

Walmart Delegated Access keys stop working after September. Reconnect apps through the App Store or order and inventory sync dies.

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Amazon Seller Central multichannel selling tools for Walmart, Shopify, TikTok, and eBayNews

Amazon Just Put Walmart Inside Seller Central

Amazon is connecting eBay, Shopify, TikTok, and Walmart into Seller Central. Gradual U.S. rollout, free for sellers.

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Walmart store backroom shelves with Marketplace inventory staged for deliveryNews

Walmart Just Put Marketplace Stock in Store Backrooms

Walmart is forward-deploying Marketplace inventory into store backrooms. Sixty percent of the U.S. sits within a 30-minute delivery range.

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Big Deal Days event planning desk with laptop and packagesNews

Big Deal Days Lands October 6-7

Amazon locked Prime Big Deal Days for October 6-7. Two weeks left. Here's what sellers still control.

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Editorial photo of a marketplace operator reviewing product packaging and notes at a compliance desk.News

Senators Just Aimed FTC at Alexa and Sparky

Baldwin and Scott asked the FTC to probe Amazon's Alexa for Shopping and Walmart's Sparky over Made in USA suppression and false origin claims.

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Editorial photo of a retail media operator reviewing campaign creatives on a tablet beside product packaging.News

Walmart Display Ads Just Lifted New Buyers 45%

Walmart Connect says Onsite Display plus Sponsored Products drove a 45% median lift in new-to-brand ad sales versus search ads alone. WFS plus Sponsored Products still shows 5x GMV.

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Editorial photo of a worker splitting inbound cartons across two pallets at a fulfillment loading dock ahead of a receive-by deadline.News

Amazon Optimized Inbound Hits Sept 16

Amazon-optimized FBA splits for Prime Big Deal Days still have to arrive by Sept 16. Minimal splits already closed. Five days left for the option most sellers use.

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Editorial photo of a fulfillment receiving clerk checking inbound cartons at a loading dock ahead of a holiday inventory deadline.News

Walmart Annual Event Inventory Is Due Sept 15

Walmart wants WFS inventory in by Sept. 15 for the Annual Event. October Event inbound already closed. Six days left if your units are not already rolling.

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Editorial photo of a marketplace seller reviewing deal submissions at a desk as a deadline approaches.News

Big Deal Days Deals Close Tomorrow

Amazon’s Prime Big Deal Days deal submission window closes September 8. Fees are unchanged. Inventory still has to arrive by September 9 or 16 depending on your split option.

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Editorial photo of a customer returning a holiday package at a retail returns desk.News

Walmart Holiday Returns Run Through Jan 31

Walmart just told Marketplace sellers the standard 30-day return window stretches for holiday. Most items bought Oct 1 through Dec 31, 2026 can come back through Jan 31, 2027.

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