Choosing where to sell is one of the biggest decisions an e-commerce brand makes. Pick the right marketplace and you tap into millions of ready-to-buy shoppers. Pick the wrong one and you spend months fighting for visibility with a product that never really fits the audience.
Amazon, eBay and TikTok Shop are three of the most popular options for brands selling in the USA, the UK and beyond. They look similar from the outside, but they reward very different kinds of sellers. In this guide we compare them side by side so you can decide where to start, and when it makes sense to sell on more than one.
The short answer
- Amazon is best for products people actively search for, where price, reviews and fast delivery decide the sale.
- eBay is best for used, refurbished, collectable, niche and hard-to-find items, and for sellers who want lower barriers to entry.
- TikTok Shop is best for visual, demonstrable products that people buy on impulse after seeing them in a video or live stream.
Most growing brands end up on at least two of these. The question is which one to master first.
Amazon: the search engine for shopping
When a shopper already knows what they want, there is a good chance they start on Amazon. That intent is Amazon’s biggest strength. You are not trying to convince people they need a product; you are trying to convince them to buy yours instead of the next listing.
Where Amazon shines
- Huge, high-intent traffic. Shoppers arrive with their card ready.
- Fulfilment by Amazon (FBA). Amazon stores, picks, packs and ships your orders, and your listings become Prime-eligible.
- Trust. Buyers trust Amazon’s returns and delivery, which lowers the barrier for new brands.
- Advertising tools. Sponsored Products and Sponsored Brands let you buy visibility on the exact keywords people search.
What to watch out for
- Competition and price pressure. Popular categories are crowded, and similar products compete hard on price.
- Fees add up. Referral fees, fulfilment fees, storage fees and advertising can take a large share of each sale. Always model your margin before you launch.
- Strict rules. Listing, packaging and account-health policies are enforced closely. Mistakes can suppress listings or freeze inventory.
Amazon suits you if: you sell new, branded products with healthy margins, you can keep stock levels steady, and you are ready to invest in listing optimisation and PPC.
eBay: flexible, broad and seller-friendly
eBay has evolved far beyond auctions. Today most sales are fixed-price, and the platform remains a go-to destination for categories like auto parts, electronics, fashion, collectables and refurbished goods.
Where eBay shines
- Lower barrier to entry. It is quick to list, and you keep more control over shipping and presentation.
- Great for unique and used items. Condition-based and one-off listings are a natural fit.
- Loyal buyer base. Many shoppers check eBay specifically for deals and hard-to-find products.
- Promoted Listings. You can boost visibility and only pay a percentage when a promoted item sells (with the standard option).
What to watch out for
- You handle more of the work. Unless you use a fulfilment partner, shipping and customer service are on you.
- Presentation matters. Titles, item specifics and photos have a big effect on search ranking within eBay.
- Feedback is visible. Late dispatch or poor communication quickly shows up in your seller rating.
eBay suits you if: you sell a wide catalogue, used or refurbished goods, parts or niche items, or you want a marketplace with more flexibility than Amazon.
TikTok Shop: discovery-led commerce
TikTok Shop flips the traditional model. Instead of shoppers searching for a product, the product finds them through short videos, creator content and live streams. When it works, it can move a lot of stock very quickly.
Where TikTok Shop shines
- Viral reach. A single video can put your product in front of a huge audience overnight.
- Creator affiliates. You can let creators promote your products in exchange for commission, so you only pay when they sell.
- Seamless checkout. Viewers can buy without leaving the app, which keeps impulse purchases moving.
- Live shopping. Live streams let you demonstrate products and answer questions in real time.
What to watch out for
- Content is the engine. Without a steady flow of videos, sales slow down fast.
- Spiky demand. A viral moment can sell out your stock, so inventory and fulfilment need to keep up.
- Fit matters. Products that are visual, affordable and easy to demonstrate perform best. Complex or high-ticket items often need more nurturing.
TikTok Shop suits you if: your product looks great on camera, you can produce content consistently (or work with creators), and you want to build a brand audience as well as sales.
Side-by-side comparison
| Factor | Amazon | eBay | TikTok Shop |
|---|---|---|---|
| How buyers find you | Search | Search and browsing | Video, creators and live |
| Best for | New, branded, high-demand products | Used, niche, parts, wide catalogues | Visual, impulse-friendly products |
| Fulfilment | FBA or self-fulfilled | Mostly self-fulfilled or 3PL | Self-fulfilled or 3PL |
| Main growth lever | Listings, reviews and PPC | Titles, item specifics and pricing | Content and creator partnerships |
| Effort to start | Medium to high | Low to medium | Medium (content-heavy) |
How to decide where to start
Ask yourself four questions:
- Do people already search for my product? If yes, Amazon’s search traffic is hard to beat.
- Is my product new, used or one of a kind? Used, refurbished and unique items usually do better on eBay.
- Does my product look impressive in a 15-second video? If yes, TikTok Shop could be your fastest growth channel.
- What are my real margins after fees, shipping and ads? Run the numbers for each marketplace before committing stock.
Why many brands sell on more than one marketplace
Selling across several channels spreads risk. If an algorithm change or policy update hits one marketplace, the others keep orders flowing. It also lets you reach different buyers: the person searching on Amazon, the bargain hunter on eBay and the scroller on TikTok are often not the same customer.
The challenge is keeping everything in sync: stock levels, pricing, listings, customer messages and returns. That is where many sellers get stretched. A good setup usually includes inventory syncing, consistent product content and a clear plan for each channel rather than copying the same listing everywhere.
Common mistakes to avoid
- Launching on every marketplace at once without the stock or team to support it.
- Copy-pasting the same title and description everywhere instead of optimising for each platform’s search.
- Ignoring fees until the first payout arrives.
- Underestimating customer service, especially during peak season.
- Treating TikTok Shop like a catalogue instead of a content channel.
Need help choosing or managing your marketplaces?
At Ecomalign we manage stores on Amazon, eBay, TikTok Shop and more for brands in the USA, the UK, the UAE, Canada, Australia and Pakistan. From account setup and listing optimisation to advertising and day-to-day operations, our marketplace management team helps you grow on the right channels without the guesswork.
Want a second opinion on where your products will sell best? Talk to our team and we will review your catalogue and recommend a starting point. You can also explore our full range of e-commerce solutions.
