Amazon, eBay & Walmart Marketplace Integration for Shopify

Marketplaces bring ready-made shoppers, but running them separately from your store creates double work and overselling. This project connects the marketplaces you choose to your Shopify catalog, maps your listings correctly, syncs inventory and tests how orders flow back into Shopify.

Who needs this

Stores adding marketplaces to their sales channels, and sellers who manage Amazon or eBay listings by hand.

What's included

• Marketplace approach chosen with you (Shopify's Marketplace Connect or a suitable app)
• Seller accounts and channel connections set up and checked
• Product data mapped to marketplace categories and requirements
• Listings created or synced for your chosen products
• Inventory sync configured to prevent overselling
• Pricing rules reviewed, including marketplace fees against your margins
• Order and tracking flow tested end to end
• Common listing errors diagnosed and fixed
• Handover notes on monitoring sync health

Fees change the math

Marketplaces take a percentage and often add fulfillment or advertising costs. Before listing everything, we check which products still make money after those fees.

Approval is up to the marketplace

Amazon, eBay and Walmart review sellers, categories and products themselves. We prepare everything those reviews look at, but we can't guarantee approval.

What this doesn't promise

Marketplace sales or approval for restricted categories. We handle the connection and data; the marketplaces decide who can sell.

Related services

Marketplace listings need a clean feed, see the product feed generator. Stock has to stay in step across channels with ERP and 3PL integration, and an inventory and reorder tracker helps you avoid overselling. Consistent product data comes from product upload and catalog management.

Delivery: 3–7 business days · Format: Marketplace channels connected, listings synced and orders tested