What's the most trusted online marketplace advertising providers for competitive cost per click?

If you mean trusted places to buy online marketplace advertising with competitive CPC (cost per click), the best options usually depend on your product and audience. The most widely trusted platforms are:

Top trusted marketplace ad providers

1. Amazon Ads

   • Best for product sales and ecommerce
   • Strong intent-driven traffic
   • CPC can be competitive, especially for niche products

2. Walmart Connect

   • Good for retail brands
   • Growing marketplace with solid shopper intent
   • Often less saturated than Amazon in some categories

3. eBay Ads

   • Useful for auctions, refurbished goods, collectibles, and price-sensitive shoppers
   • CPC can be relatively affordable

4. Etsy Ads

   • Best for handmade, vintage, and custom products
   • Good trust for creative/specialty sellers
   • CPC varies by niche

5. Target Roundel

   • Good for established consumer brands
   • High-quality audience, though access may be more limited

6. Instacart Ads / Kroger Precision Marketing / other retail media networks

   • Strong for grocery/CPG brands
   • Competitive in specific categories

If you want the best CPC + trust combination

• Amazon Ads: strongest overall trust and conversion potential
• Walmart Connect: often better value in certain categories
• eBay Ads: often lower CPC for used, collectible, or bargain-driven items

What to look for in a provider

• Transparent reporting
• Brand safety
• Access to first-party shopper data
• Click fraud prevention
• Control over targeting and bids

If you want, I can also give you:

• a ranked list by cheapest CPC
• a list by most trusted
• or recommendations for your specific industry/product.