A design that goes on sale in three places is not one product listed three times. It is closer to three products that happen to share artwork. The buyers arrive differently, the fees are calculated differently, and the marketplaces disagree about what a listing is at a fairly basic level.
This is the part of the job that is least visible from outside, and it is the reason "just list it everywhere" is harder advice to follow than it sounds.
Etsy: a search box with a checkout attached
Almost everyone who sees your design on Etsy typed something first. That makes the title the entire discovery mechanism, and Etsy gives you 140 characters of it. Those characters are not a name, they are the surface that search matches against, which is why marketplace titles read like keyword runs rather than like sentences.
Etsy is also the one that charges you before anything happens. Every listing costs $0.20 to publish and $0.20 again every four months when it renews, whether or not a single person has looked at it. On one design that is nothing. Across a catalogue built on the reasonable strategy of listing a lot and seeing what works, it is the one cost that scales with how much you make rather than how much you sell.
The fee that lands on a sale is also taken on a bigger number than people expect. Etsy's percentage applies to the total the buyer paid, which includes what they paid for postage. We went through 82 of our own recent order lines and the effective rate came out at 11.66%, against an advertised 6.5%. None of it was hidden. It was simply calculated on a base most spreadsheets leave out.
Amazon: a catalogue, not a shop
Amazon does not really think of your design as a listing. It thinks of it as an entry in a shared catalogue, and the shape of that entry is very different.
A shirt is a parent product with a child underneath it for every single purchasable combination. Every colour in every size is its own item with its own identifier. In our catalogue a single design typically expands to somewhere around sixty-five children on Amazon. One upload, sixty-five catalogue rows, all of which have to be created correctly and all of which can fail individually. This is also why new Amazon sellers hit listing limits they did not expect: the allowance counts children, not designs.
The pricing behaves differently too, and in a way that is genuinely counterintuitive. Amazon's apparel referral fee is a cliff rather than a sliding bracket. Under $15 it is 5%, from $15 to $20 it is 10%, and above $20 it is 17% of the whole sale price, not of the amount above the threshold. A shirt at $19.99 pays about $2.00. The same shirt at $20.99 pays about $3.57. Dropping the price by a dollar makes the listing both cheaper for the buyer and more profitable for the seller, which is not a sentence you get to write very often.
Anyone who sets one price across every channel is quietly giving money away somewhere, and on Amazon the giveaway can be a whole dollar and a half on a single dollar of price.
TikTok Shop: nobody was searching
The third one breaks the model the other two share. On Etsy and Amazon, demand already exists and your listing is competing to be the one that satisfies it. On TikTok Shop there is no search box carrying people to you. The product sits next to content, and the content is what does the work.
That changes which designs have a chance. A design that answers a search well, something precise like a gift for a specific job on a specific occasion, can do quietly fine on Etsy for years without anybody ever talking about it. The same design on a feed has to be interesting enough to stop a thumb, which is a completely different property and one that has very little to do with how well it was drawn.
It also means the tempo is different. Search demand is steady and seasonal in predictable ways. Feed demand is spiky and mostly absent. Neither is better. They just reward different things.
What this means for the person making the design
The useful takeaway is not that you should learn three sets of rules. It is that a design failing in one place is weak evidence about the other two.
A design with no Etsy sales may be a titling problem rather than an artwork problem. A design that cannot be priced sensibly against Amazon's fee cliff may still work fine somewhere the cliff does not exist. And a design nobody talks about can still be exactly what somebody types into a search box at eleven at night in November.
The other takeaway is less comfortable. Doing this properly means maintaining three different titles, three price calculations, three sets of images and three separate sets of rules about what is allowed, and then keeping all of it in sync when a garment cost changes. That is real, recurring, uncreative work, and it is the reason a lot of people who are genuinely good at making designs stop after a few months.
Where we come into it
That synchronisation work is what we do. A design uploaded here is written once and then turned into whatever each marketplace needs, priced per channel against that channel's actual fee structure, and kept current afterwards. Two live examples of what that looks like at the far end: a text design on Tickle Stitch and an illustration on Fluffy Doodle, both listed across marketplaces without their artists writing a single title.
The honest version of the offer has not changed. Most designs sell modestly or not at all, this is not fast money, and anybody telling you otherwise is selling a course. What the arrangement gets you is that the failures are free: no stock, no listing fees out of your pocket, no print run to write off. If you would rather spend your evenings drawing than reconciling fee tables, you can create a free account, and the money side is set out in full on the payout example page.