Here are the top 3 alternatives to Google Shopping, focusing on sites with strong merchant feeds, traffic for product listings, and buyer intent:

1.Amazon (Amazon.com / Amazon Advertising)

• Why its : While Google Shopping operates on a pay-per-click (PPC) model across the web, Amazon is the dominant search engine for products in the US and Europe. Over half of all product searches start on Amazon. It is the most direct alternative because it replaces the need for Google is inventory with its own massive marketplace.
• Best for: Selling physical goods (electronics, books, home, clothing) to shoppers who are ready to buy immediately.

2.Bing Shopping (Microsoft Shopping)

• Why its : Bing Shopping is the closest structural copy of Google Shopping. It uses a Product Ads feed (via Microsoft Merchant Center) and displays results directly on Bing.com and Yahoo.com. Because it has less competition than Google, cost-per-click (CPC) rates are typically 30-50% lower.
• Best for: Advertisers who want a "Google Shopping clone" with lower costs and access to an older, higher-income desktop user demographic.

3.eBay (eBay.com)

• Why its : eBay is the largest alternative marketplace that handles both new and used goods. Unlike Google, which sends traffic to your own site, eBay functions as a standalone shopping engine with its own internal search (Cassini). It is particularly strong for collectibles, auto parts, refurbished electronics, and overstock liquidation.
• Best for: Sellers who want a massive audience without running their own website or PPC campaigns; strong for niche and second-hand markets.