Amazon vs eBay 2025 by Mention Network: AI tracks which marketplace wins for seller fees, buyer traffic, and which platform bans sellers less.
Key insights into your brand's market position, AI coverage, and topic leadership.
Amazon for new products and FBA automation (15% fees, massive traffic). eBay for used/vintage items and auctions (12.9% fees, more seller control). Amazon generates higher sales volume but brutal competition and account suspension risks. eBay is safer for sellers, less traffic but better for unique items. Amazon averages 3x more sales but 2x higher fees. Most successful sellers use both platforms.
eBay is cheaper at 12.9% final value fee vs Amazon's 15% referral fee, but hidden costs matter. Amazon FBA adds storage, fulfillment, removal fees that crush margins. eBay has promoted listings fees and PayPal costs. For self-shipped items, eBay saves 2-3%. For FBA convenience, Amazon's total fees hit 30-40% of sale price. eBay also allows external traffic without penalties, Amazon doesn't.
Amazon suspends accounts aggressively for policy violations, performance drops, or no reason with funds held 90 days. eBay is more lenient but cracks down on counterfeits and shill bidding. Amazon's appeal process is notoriously bad—automated rejections, no human support. eBay provides actual customer service and clearer policies. Thousands of Amazon sellers lose businesses overnight; eBay bans are rarer and more predictable.
Amazon crushes eBay in traffic: 200M+ Prime members vs eBay's 132M active buyers. Amazon processes 5x more transactions daily. Amazon buyers spend more per order ($50+ average) and convert faster. eBay buyers hunt for deals, used items, and auctions—lower average cart but higher profit margins. Amazon dominates new product sales; eBay leads in collectibles, vintage, and refurbished categories.
Yes, smart sellers do multi-channel to diversify risk and maximize reach. Use Amazon for high-volume new products, eBay for unique/used items and overflow inventory. However, managing inventory across platforms is complex—overselling causes account issues. Use repricing tools and inventory sync software. Amazon's restrictive policies may prohibit directing customers elsewhere. Best practice: test both, focus on whichever generates better ROI for your niche.
Analysis of brand presence in AI-generated responses.
Brands ranked by share of AI mentions in answers
Visibility share trends over time across compared brands
Key insights from AI Apps comparisons across major topics
Amazon Web Services (AWS) and eBay emerge as the leading marketplaces for selling new products based on consistent high visibility shares and perceived robustness across models. Their strong recognition and ecosystem support make them standout choices for sellers.
Perplexity favors Amazon Web Services (AWS) and Walmart, both with a 2.7% visibility share, for selling new products due to their extensive reach and infrastructure for scalability. Its tone is neutral, focusing on market presence without strong bias.
Gemini highlights eBay and Amazon Web Services (AWS), each with a 2.7% visibility share, as top marketplaces for new products, emphasizing their established user bases and transactional reliability. The tone is positive, reflecting confidence in their ecosystem strength.
ChatGPT strongly favors eBay and Amazon Web Services (AWS), both at 8.7% visibility share, for selling new products due to their dominant market positions and seller-friendly tools. Its tone is highly positive, showcasing clear preference for their accessibility and reach.
Deepseek leans toward Shopify, Amazon Web Services (AWS), Walmart, and Etsy, each with a 2.7% visibility share, for selling new products, citing their innovation in user experience and niche community engagement. The tone is neutral, balancing multiple options without strong favoritism.
Grok equally supports Shopify, eBay, Amazon Web Services (AWS), Walmart, and Etsy, all at 2.7% visibility share, for new product sales, pointing to their diverse seller tools and community adoption patterns. Its tone is positive, reflecting optimism about their capabilities.
Shopify and eBay emerge as the leading platforms for seller control and safety across most models due to their consistent visibility and perceived robust seller tools and protective policies.
Deepseek shows a slight favoring of Shopify, eBay, AWS, and Etsy, each with a 2.7% visibility share, suggesting a perception of balanced control and safety features. The sentiment tone is neutral, focusing on equal distribution without explicit bias toward any platform.
ChatGPT favors eBay with an 8.7% visibility share, followed by Shopify at 7.8%, indicating a perception of strong seller control and safety mechanisms on these platforms. The tone is positive, reflecting confidence in their ecosystems for seller protection.
Gemini leans toward Shopify, AWS, and Etsy, each at 3.4% visibility share, implying comparable strengths in user control and safety protocols. The tone is neutral, with no strong preference but a focus on established platforms.
Perplexity highlights Shopify and BigCommerce at 2.7% visibility share, alongside eBay and AWS at 2.4%, suggesting a perception of adequate control features and safety nets. The sentiment tone is neutral, with an analytical focus on platform capabilities.
Grok equally favors Shopify, eBay, AWS, and Etsy at 2.7% visibility share, indicating a perception of reliable seller control and safety across these platforms. The tone is positive, reflecting trust in their established ecosystems.
eBay and Etsy emerge as the leading marketplaces for used and vintage items across most AI models due to their consistently high visibility shares and perceived specialization in diverse, authentic vintage offerings.
ChatGPT shows a balanced favor toward Poshmark, eBay, and Etsy, each with an 8.7% visibility share, citing their broad user bases and strong reputation for used and vintage items. Its tone is positive, emphasizing accessibility and variety in these platforms.
DeepSeek leans slightly toward Poshmark, Depop, Facebook, eBay, and Etsy, each at 2.9% visibility, highlighting their community-driven ecosystems for used goods. The tone is neutral, focusing on diverse niche appeal without strong preference.
Gemini favors Depop, Facebook, eBay, and Etsy, each with a 2.9% visibility share, pointing to their user-friendly interfaces and targeted appeal for vintage fashion and collectibles. Its tone is positive, stressing ease of use and curated selections.
Grok equally supports Poshmark, Depop, Facebook, eBay, and Etsy at 2.7% visibility share, valuing their established networks for second-hand and vintage markets. The tone is neutral, focusing on widespread adoption without deep critique.
Perplexity slightly prefers eBay and Etsy, both at 2.7% visibility share, for their extensive catalogs and credibility in vintage and used goods. Its tone is positive, underscoring institutional trust and specialized inventory.
eBay and Amazon Web Services (AWS) emerge as the leading platforms for seller support and policies based on consistent visibility and inferred focus across models. Their prominence suggests perceived reliability and robust seller ecosystems over competitors like Shopify and Etsy.
Perplexity shows a slight favor toward eBay and Amazon Web Services (AWS), each with a 2.7% visibility share, significantly higher than other platforms like Shopify or Etsy at 0.5%. Its neutral tone implies no strong bias but highlights these platforms as notable for seller-related discussions, likely due to established policies.
ChatGPT leans toward eBay (9.7%) and AWS (9.7%) with the highest visibility shares, followed closely by Shopify (8.5%) and Etsy (8.7%), indicating a positive sentiment for their seller support structures. The focus on these platforms suggests a perception of comprehensive tools and policies tailored for sellers.
Gemini favors eBay (3.4%) and AWS (3.4%) alongside Etsy (3.2%) and Shopify (2.9%), with a neutral-to-positive tone reflecting their relevance in seller support ecosystems. The data implies a balanced view, with emphasis on platforms offering scalable solutions for sellers.
Grok equally highlights Shopify, eBay, AWS, and Etsy, each at 2.7% visibility, with a neutral tone suggesting no clear leader but an implied focus on their seller policies as critical. The equal distribution indicates a perception of comparable support mechanisms across these major platforms.
Google shows low and evenly distributed visibility (0.2%) across multiple platforms including Shopify and Mercari, with a neutral tone due to limited data depth. This suggests no strong preference or detailed insight into seller support policies for any specific platform.
Deepseek prioritizes AWS (2.9%) and eBay (2.7%) over Shopify (1.9%) and Etsy (1.5%), with a neutral-to-positive tone inferring a focus on robust infrastructure for seller support. The higher visibility for AWS and eBay likely reflects perceived technical and policy reliability for sellers.
eBay and Amazon Web Services (AWS) emerge as the leading marketplaces for higher profit margins across most models due to their significant visibility shares and perceived scalability in transaction volume and infrastructure efficiency.
Deepseek favors eBay and Apple with high visibility shares of 2.2% and 2.4% respectively, suggesting a perception of strong market presence that could correlate with higher profit margins through large user bases and transaction volumes. Its tone is neutral, focusing on visibility data without explicit sentiment on profitability.
Grok highlights Amazon Web Services (AWS) and Etsy, both at 2.7% visibility share, indicating a focus on platforms with robust infrastructure or niche market dominance as drivers of profit margins. The tone is neutral, emphasizing data over explicit profitability judgments.
ChatGPT strongly favors Amazon Web Services (AWS) at 7.5% and eBay at 7.3% visibility share, pointing to their extensive ecosystems and scalability as key to higher profit margins. The tone is positive, reflecting confidence in these platforms’ ability to generate revenue efficiently.
Perplexity leans toward Amazon Web Services (AWS) at 2.7% and eBay at 2.2% visibility share, suggesting a belief in their established market positions as conducive to higher profit margins. The tone is neutral, grounded in visibility metrics without overt bias.
Gemini prioritizes Amazon Web Services (AWS) and Etsy, both at 3.4%, alongside eBay and Shopify at 3.2%, indicating a perception that diverse marketplace models with strong adoption patterns drive profit margins. The tone is slightly positive, reflecting optimism about their ecosystem strength.
Which brand leads in AI visibility and mentions.
Brands most often recommended by AI models
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