Score any niche for Amazon Merch on Demand: royalty after fees and base cost, saturation, upload-tier throughput, 60/256-character listing builder and tradem…
Search a niche and score it against Amazon Merch on Demand's own constraints instead of generic print-on-demand demand numbers: royalty after Amazon's 15% referral fee and the product base cost, how crowded the niche already is, how many uploads your current tier allows, and whether the phrase fits the 60-character title and 256-character bullet caps that Merch enforces on every listing.
On Redbubble or Society6 a niche can work on stickers and prints at a $4 profit, so demand alone is close to enough. Amazon Merch on Demand only sells apparel and a short list of accessories, and every unit carries a fixed base cost — $9.80 for a standard US t-shirt — before Amazon takes its 15% referral fee. That single number rewrites niche selection: a niche whose buyers refuse to pass $17 leaves you roughly $4.65 a shirt, while the same design effort in a niche that lists comfortably at $22.99 returns about $9.74. Price tolerance, not raw search volume, is the first filter this tool applies.
The second filter is throughput. Merch rations upload slots by tier, so at Tier 10 you publish about two designs a day and every slot you spend on a crowded niche is a slot you cannot spend testing a promising one. That is why the score weighs saturation at thirty points and why the planner converts a shortlist into days of work at your current tier rather than showing an abstract opportunity number.
The third is discoverability inside Amazon rather than inside a POD marketplace. Merch listings rank on brand, title and two bullet points, all hard-capped, with no tag field to absorb keyword overflow. A niche with a long-tail phrase buyers actually type — night shift nurse coffee rather than nurse — is worth more on Merch than anywhere else, because you can fit the full phrase into a 60-character title and own it outright.
Shortlist three niches that clear a 60 fit score, then check that each one supports a list price of at least $19.99 in the royalty calculator. Run the trademark pre-check on the literal phrase you plan to print — this is the step that ends most Merch accounts when it is skipped, and it takes ninety seconds per phrase.
Design two angles per niche: one typographic that leans entirely on the phrase, one illustrative that carries the same joke visually. Merch buyers search text, so the typographic version usually earns the first impressions while the illustrative one earns the higher review rate. Write the title so the buyer's exact phrase appears in the first forty characters, then use both bullets — one for who the shirt is for, one for the occasion it gets bought for.
Publish, wait fourteen days, and judge on impressions rather than sales. A design with impressions and no sales is a design problem; a design with neither is a keyword problem, and the fix is a retitle rather than a new upload. Once ten sales land and Tier 25 unlocks, widen to adjacent niches in the same category hub instead of starting somewhere unrelated.
The free niche finder scores a niche for any print-on-demand marketplace. This tool scores the same niche against Amazon Merch on Demand specifically: royalty after Amazon's 15% referral fee and the product base cost, whether the average selling price leaves margin on apparel, how many uploads your tier allows, and whether the phrase is safe to put on a shirt.
Royalty equals your list price minus Amazon's referral fee (15% on apparel) minus the product base cost. A standard US t-shirt costs $9.80 to produce, so a $19.99 list price returns roughly $7.19. Base costs and fees vary by marketplace and product and Amazon revises them, so treat the calculator as an estimate and confirm in your dashboard before you price a whole niche.
Brand name up to 50 characters, product title up to 60 characters, and each of the two bullet points up to 256 characters. The builder on this page counts as you type and flags overflow, because Merch rejects listings that exceed the limits rather than truncating them.
Merch rations upload slots. At Tier 10 you get roughly two uploads a day, so spending them on a saturated niche costs you a week of throughput. Higher tiers let you test several angles per niche in parallel. The planner shows how long a shortlist takes to publish at your current tier.
It gives you the pre-check workflow and links the exact USPTO and Amazon searches to run for your phrase. No automated tool can clear a trademark for you, and Merch account terminations are usually trademark-related, so run the search on the literal words before you upload.