The Fundamental Difference
Before comparing individual features, understand the core positioning:
Amazon is a product search engine. Shoppers come to Amazon with purchase intent — they’re searching for a specific product or solution and ready to buy. Amazon’s algorithm serves the most relevant, highest-converting products. The buyer experience is standardized. Brand identity is secondary to product quality, price, and reviews.
eBay is a marketplace of sellers. Shoppers come to eBay to browse, compare, and find deals. Listings are more seller-centric — your seller profile, feedback score, and listing format (auction vs. fixed price) matter. eBay has historically been associated with used goods and collectibles, though it has expanded significantly into new products.
This difference shapes everything: traffic quality, conversion rate, brand building potential, and long-term scalability.
Traffic and Reach
| Metric | Amazon | eBay |
|---|---|---|
| Monthly Active Users (US) | ~300 million | ~130 million |
| Global Annual GMV | ~$700 billion | ~$73 billion |
| Share of US E-Commerce | ~38% | ~3-4% |
| Prime Members (US) | ~200 million | N/A |
| Purchase Intent | Very high | Moderate |
Amazon’s traffic advantage is not just about volume — it’s about intent. A visitor on Amazon is statistically more likely to make a purchase than a visitor on eBay. Amazon’s conversion rate across the platform averages 9-13% (and up to 74% for Prime members on certain products). eBay’s conversion rates are typically 2-5%.
What this means: The same product listed on both platforms will generally sell more units and sell faster on Amazon, assuming comparable listing quality and competitive pricing.
Fee Comparison
Both platforms charge fees, but the structures differ:
Amazon Fees
| Fee Type | Amount |
|---|---|
| Professional Account | $39.99/month |
| Referral Fee | 8-45% (typically 15% for most categories) |
| FBA Fulfillment Fee | $3.06-$5.21+ per standard-size unit |
| FBA Storage Fee | $0.56-$2.40 per cubic foot per month |
| Advertising (typical) | 10-15% of revenue |
Total effective cost for a typical product: 30-45% of selling price (before COGS).
eBay Fees
| Fee Type | Amount |
|---|---|
| Store Subscription | $0-$349.95/month (Basic: $7.95, Premium: $21.95, Anchor: $59.95) |
| Insertion Fee | $0.35 per listing above free allowance |
| Final Value Fee | 3-15% (typically 13.25% for most categories) |
| Payment Processing | 2.35% + $0.30 (eBay Managed Payments) |
| Promoted Listings | 2-20% of sale price (optional) |
Total effective cost for a typical product: 18-30% of selling price (before COGS and shipping).
Fee Verdict
eBay is cheaper. But the comparison isn’t just about fee percentage — it’s about what you get for those fees. Amazon’s higher fees include: FBA (warehousing, picking, packing, shipping, customer service, returns handling), Prime eligibility, and access to 300M+ high-intent shoppers. eBay’s lower fees leave you handling fulfillment yourself (or paying for eBay’s fulfillment service separately).
When you factor in the cost of self-fulfilling eBay orders (warehouse space, labor, shipping supplies, carrier costs, customer service time), the effective cost gap narrows significantly. And when you factor in Amazon’s higher conversion rate, the revenue per listing is typically much higher on Amazon — making the ROI favorable despite higher fees.
Product Categories: Where Each Platform Wins
Amazon Dominates In:
New, branded consumer products. If you sell a new product with a brand name, UPC, and consistent supply, Amazon is built for you. The algorithm rewards quality, reviews, and conversion — not seller history.
Commodity and replenishable products. Household goods, supplements, pet supplies, health and beauty products — items people buy repeatedly. Amazon’s Subscribe & Save program creates automatic recurring revenue.
Products where Prime shipping matters. Anything a customer wants delivered within 1-2 days. Amazon’s fulfillment speed is a conversion advantage that eBay can’t match at scale.
eBay Dominates In:
Used, vintage, and collectible goods. eBay remains the dominant platform for secondhand items, antiques, vintage clothing, rare collectibles, and one-of-a-kind goods. Amazon has no equivalent.
Parts and automotive. eBay has the strongest parts marketplace online. Sellers of auto parts, motorcycle parts, industrial components, and electronics parts find better demand and better tools on eBay.
Unique and hard-to-find items. Items without UPCs, limited-edition products, discontinued items, and niche hobbyist goods do well on eBay where the browsing culture values discovery.
Auction-format selling. If your items benefit from competitive bidding (rare items, estates, bulk lots), eBay’s auction format has no Amazon equivalent.
Category Overlap (Both Platforms Work):
Electronics (new), fashion (new), home goods (new), toys, books, and media. In these overlapping categories, Amazon typically produces higher volume, while eBay can produce better margins due to lower fees — but only if you have the fulfillment infrastructure to self-ship efficiently.
Brand Building Potential
| Factor | Amazon | eBay |
|---|---|---|
| Brand Registry | Yes (unlocks A+ Content, Stores, ads) | Limited (eBay has brand tools but less developed) |
| A+ / Enhanced Content | Yes (rich media below listing) | Limited HTML in descriptions |
| Brand Store | Yes (amazon.com/stores/yourbrand) | Yes (eBay Stores) |
| Advertising for Brand Building | Sponsored Brands, DSP, video | Promoted Listings (less sophisticated) |
| Customer Data Access | Limited (Amazon controls the relationship) | Limited (eBay Managed Payments controls data) |
| Review System | Product-level (reviews follow the ASIN) | Seller-level (feedback on the seller, not the product) |
Amazon is better for building brand recognition through the product experience — A+ Content, Brand Story, Sponsored Brands video ads, and Amazon Stores create a branded environment within the marketplace.
Neither platform gives you the customer relationship. On both Amazon and eBay, the platform mediates the relationship. You don’t get customer emails for marketing purposes. You can’t build a direct relationship. For true brand building and customer ownership, you need your own DTC channel (Shopify) in addition to marketplace selling.
Advertising and Marketing
Amazon Advertising
Amazon’s ad ecosystem is the most advanced marketplace advertising platform available:
- Sponsored Products (keyword and product targeting)
- Sponsored Brands (headline, video, Store spotlight)
- Sponsored Display (retargeting, audience targeting)
- Amazon DSP (programmatic, off-Amazon)
- Amazon Marketing Cloud (advanced analytics and custom audiences)
Amazon advertising is a proven revenue driver with sophisticated targeting, measurement, and optimization tools. Most Amazon agencies (including ours) consider advertising management a core competency.
eBay Advertising
eBay’s advertising is simpler:
- Promoted Listings Standard (pay only when item sells, 2-20% commission)
- Promoted Listings Advanced (CPC bidding, top placement in search)
- eBay Offsite Ads (eBay promotes your listings on external sites, 1-4% commission on sales)
eBay’s advertising is functional but lacks the targeting sophistication, measurement depth, and creative options of Amazon’s system. There’s no equivalent to Sponsored Brands, DSP, or AMC.
Verdict: If advertising sophistication matters to your growth strategy, Amazon is the superior platform.
Fulfillment and Logistics
Amazon FBA
Send inventory to Amazon’s warehouses. Amazon picks, packs, ships, handles customer service, and processes returns. Your products become Prime-eligible. You pay FBA fees per unit.
Advantages: 1-2 day delivery, Prime badge (massive conversion lift), no warehouse management, scalable without infrastructure investment.
Disadvantages: FBA fees add $3-$6+ per unit, long-term storage surcharges, limited packaging customization, and you’re dependent on Amazon’s infrastructure.
eBay Fulfillment
eBay offers a fulfillment service, but it’s less developed than FBA. Most eBay sellers either self-fulfill (ship from their own warehouse/home) or use a third-party logistics (3PL) provider.
Self-fulfillment advantages: Complete control over packaging, shipping speed, and customer experience. Lower per-unit cost if you have efficient operations.
Self-fulfillment disadvantages: No Prime equivalent, you handle all customer service and returns, limited scalability without infrastructure investment, and shipping speed depends on your own operations.
The Verdict: Which Platform to Choose
Choose Amazon If:
- You sell new, branded products with UPCs
- You want access to the largest and highest-intent online shopping audience
- You value Prime-eligible fulfillment without managing your own warehouse
- You plan to invest in advertising as a growth lever
- You want to build brand recognition through A+ Content and Brand Store
- You’re targeting recurring purchases (replenishable products)
Choose eBay If:
- You sell used, vintage, collectible, or one-of-a-kind items
- You sell auto parts, industrial parts, or niche components
- You already have efficient self-fulfillment operations
- You want lower fees and are comfortable with lower traffic volume
- Your products are better suited to auction-format selling
Choose Both If:
- You sell new products in overlapping categories AND have the operational capacity to manage both platforms simultaneously
- You want to diversify your marketplace risk (not dependent on a single platform)
- You sell across both new and used/refurbished categories
Our Recommendation for Most Brands:
Start with Amazon. The traffic volume, purchase intent, FBA infrastructure, and advertising tools give you the fastest path to revenue and market learning. Once Amazon is established and profitable, consider adding eBay as a supplementary channel — especially for clearance inventory, refurbished products, or product categories where eBay has unique demand.
This is why GigaCommerce focuses on Amazon as our primary marketplace management service. The ROI for most brands is highest on Amazon, and the platform’s tools (COSMO algorithm, Rufus AI, DSP advertising, Brand Analytics) create compounding advantages for brands that invest in optimization.
Frequently Asked Questions
Can I sell the same product on both Amazon and eBay?
Yes. There’s no exclusivity requirement on either platform. Many sellers list the same products on both. The key consideration is pricing — if your Amazon price includes FBA costs that your eBay price doesn’t, you’ll need different pricing strategies for each platform. Also ensure your inventory management system can track stock across both channels to prevent overselling.
Which platform has more competition?
Amazon has more competition in most categories, but also more demand. eBay has fewer sellers but also fewer buyers. The relevant metric isn’t total competition — it’s competition relative to demand in YOUR specific product niche. Research both platforms for your specific products before deciding.
Is eBay dying?
No. eBay’s total GMV has been relatively stable, and the platform has a loyal user base for specific categories (collectibles, parts, vintage, refurbished). However, eBay’s share of the overall e-commerce market has declined as Amazon has grown. For new branded products, Amazon’s growth trajectory is stronger. For used goods and specialty categories, eBay remains the dominant platform.
How do eBay and Amazon handle returns differently?
Amazon handles returns through FBA — the customer ships the item to Amazon, and Amazon processes the return with minimal seller involvement. On eBay, the seller manages returns directly — you receive the item back, inspect it, and process the refund. Amazon’s system is more convenient for the customer (which is why return rates are higher on Amazon), while eBay’s system gives sellers more control.
Should I use eBay to sell Amazon FBA returns or excess inventory?
This is a common and effective strategy. Amazon FBA returns that can’t be resold as “new” on Amazon can often be sold as “open box” or “like new” on eBay at a discount. This recovers value from inventory that would otherwise be disposed of or liquidated through Amazon’s liquidation program at pennies on the dollar.
Next Steps
Ready to grow on Amazon? Our Amazon management team handles listing optimization, PPC, A+ Content, and more — with AI-powered operations and month-to-month contracts. Get a free Amazon audit →
Already on Amazon and considering Walmart too? See our comparison: Amazon vs Walmart Marketplace →
Keep reading:
- Amazon Listing Optimization: The Complete 2026 Guide →
- Amazon FBA Fees 2026: Complete Cost Breakdown →
- How Much Does It Cost to Sell on Amazon? →
Last Updated: March 2026