Sell across eBay, Etsy and Amazon at once and you'll notice each platform has its own opinions about how you buy postage, how fast tracking needs to reach them, and how returns work — even though the physical label that comes out the other end is the same standard 4×6 format everywhere. Here's where the real differences sit, beyond the surface-level "they're all just marketplaces" summary.
How each platform generates a label
eBay UK sellers buy postage through eBay's own integration with Royal Mail Click & Drop, covered in our eBay labelling guide. Etsy runs its own Shipping Labels tool with a similar built-in purchase flow, covered in our Etsy labelling guide. Amazon's Buy Shipping tool, covered in our Amazon FBM guide, works the same way in principle but offers a wider choice of couriers by default. All three ultimately hand you a standard 100 × 150mm label PDF, covered in our 4×6 label size guide — the workflow to get there differs, the destination doesn't.
Tracking upload requirements and seller performance impact
This is where the platforms genuinely diverge. Amazon ties tracking upload speed directly to seller performance metrics, and for Seller Fulfilled Prime specifically, to the delivery-speed guarantee behind the Prime badge — late or missing tracking has real account consequences. eBay factors tracking timing into seller standards too, though it's generally considered more forgiving in practice. Etsy's seller base skews toward lower-volume, handmade sellers, and its tracking expectations follow suit — present, but less punishing than Amazon's. If you sell on all three, treat Amazon's tracking discipline as your baseline standard and the others will take care of themselves.
Cost of buying labels through the platform vs your own account
All three platforms offer discounted postage rates through their built-in tools compared to buying directly at a Post Office counter, but none of them are necessarily cheaper than a dedicated Royal Mail Account or a courier account with negotiated volume rates, covered in our business account guide. Amazon and eBay both allow using your own courier account instead of their built-in tool, with a manual tracking-upload step as the trade-off; Etsy's built-in tool is generally the path of least resistance for lower-volume sellers, though higher-volume Etsy shops sometimes switch to Click & Drop directly for the same reason.
Returns labels across the three platforms
Amazon's FBM returns process is generally the most structured of the three, with return authorisation and label generation built into Seller Central's workflow. eBay's returns process similarly generates a return label through the platform once a return is approved. Etsy's QR code returns option, covered in our Etsy labelling guide, takes a slightly different approach — letting the buyer generate a scannable code at a drop-off point rather than requiring them to print anything themselves, which can be a lower-friction option for buyers without easy printer access.
Which platform is most forgiving for a manual, thermal-printer-based workflow
For a seller running everything through their own thermal printer and label stock rather than relying entirely on each platform's built-in tool, Etsy and eBay are generally the more flexible of the three — both allow buying postage outside the platform and manually confirming tracking without much friction. Amazon's stricter tracking-and-performance framework, particularly under Seller Fulfilled Prime, makes it the platform where sticking closest to the built-in Buy Shipping tool tends to cause the fewest headaches.
The one thing that doesn't change across any of them
Whichever platform generated the label, and whichever route you used to buy postage, the physical label itself is the same 100 × 150mm direct thermal format — meaning one correctly configured printer and one label stock, covered in our thermal printer buying guide, handles all three without any platform-specific hardware or supplies to manage separately.
Frequently asked questions
Is the physical label format different between eBay, Etsy and Amazon? No — all three generate a standard 100 × 150mm (4×6") shipping label for UK sellers, so one thermal printer and one label stock handles all three without any platform-specific hardware or supplies.
Which marketplace is strictest about tracking upload speed? Amazon is generally the strictest, particularly for Seller Fulfilled Prime, where tracking upload speed ties directly to seller performance metrics and Amazon's Prime delivery guarantee. eBay and Etsy are comparatively more forgiving, though both still factor timely tracking into their own seller standards.
Do I have to sell on only one marketplace to keep my label process simple? No — because all three converge on the same 4x6 label format and thermal printer setup, running the same printer and label stock across eBay, Etsy and Amazon orders is straightforward. The differences that matter are in the software workflow (tracking upload, cost, returns), not the physical printing side.
One label spec, every marketplace
Our 100 × 150mm direct thermal labels print correctly for eBay, Etsy and Amazon labels alike, whichever platform generated them.
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