saja boys costume
Skip itSoft demand (-63.0% this quarter) — this niche doesn't clear our bar today.
Returns
Incredible1.0%return rate — above 5% kills the launch gate
Review moat
Great237.24avg incumbent reviews — the moat a new listing must climb
Avg price
Great£19.19avg listing price — sweet spot $15–$100
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Price range
Great£8.33–£36.07cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Bad75%top-5 click share — a locked-up shelf
Brand share
Bad93%top-5 brand share — brand-locked demand
Market size
Bad£60K£60K/yr · 312K searches
Conversion
Bad1.0%search→purchase rate — share of searches ending in a sale
Growth
Bad-63.0%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, saja boys costume is a £60K/yr Amazon United Kingdom market (312K searches/yr). The top 5 brands hold 93% of demand. Verdict: Skip it — 38/100.
Data updated Jul 23, 2026 · scored weekly · How we score niches
saja boys costume market data
- Units sold / yr
- 1K–1K
- avg 0–100/product
- Revenue / yr
- £19K–£24K
- units × avg price
- Conversion rate
- 1.0%
- Avg BSR
- #1,567
- Page quality
- 0%
- Prime
- 88%
- Sponsored
- 71%
- Out of stock
- 33.4%
- Avg brand age
- 37 months
- Avg seller age
- 195 days
Competition & brand share
The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.Brands
9
Sellers
15
Top-5 brand share
93%
Top 20: 100%
Top-5 click share
75%
Top 20: 100%
Open market
5%
- KPop Demon Hunters36%
- Kitimi30%
- Metaparty15%
- GOLDSTITCH7%
- Struts5%
- shyhand2%
- Open — no brand owns it (3 brands, 5%)
Demand
Weekly Amazon search volume, last 39 weeks — -63.0% search growth over the last 90 days.Top saja boys costume search terms
- saja boys costume107K/yr
- jinu costume22K/yr
- jinu kpop demon hunters costume47K/yr
- k pop demon hunters costume boys17K/yr
- saja boys costume kids30K/yr
- kpop demon hunters costume boys15K/yr
- jinu costume kids8K/yr
- boys kpop demon hunters costume5K/yr
- kpop demon hunters saja boys costume6K/yr
- saja boys costume adult4K/yr
Top saja boys costume products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 17 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
KPop Demon Hunters Official Saja Boys Girls Pyjama Set 5-14 Years 2 Pcs Pjs Shorts & T-shirt Kpop Merch Gifts for Girls (9-10 Years Grey Saja Boys)
KPop Demon Hunters£14.984.6★1,027 rev
Kitimi Jinu Costume Setfor Kid Teen Anime Movie Pop Black Demon Costume with Hat Chains Jewelry Saja Boys Costume Cosplay Outfits for Carnival Christmas Party Stage Dress-Up
Kitimi£35.305.0★3 rev
Metaparty Boys Black Pop Costume World Book Day Costumes for Boys with Jacket Top Pants Hat Accessories for World Book Day (Black 140)
Metaparty£25.463.8★7 rev
Mens Black Vintage Tailcoat Jacket Fancy Cool Cosplay Costume Robe
GOLDSTITCH£16.164.3★1,398 rev
Hoodie Kids Boys Kpop Costume- Fasion Pullover Anime Hoodie Kids Costume Hip Hop Streetwear Causal School Warm Oversized Long Sleeve Cartoon Print Hooded Sweatshirt Outwear Saj Merch Unisex 9-10Y
Kitimi£11.574.0★2 rev
Newest
by launch date
KPop Demon Hunters Tshirt K Pop Huntrix Girls T-Shirts Short Sleeve Summer Girls Top 9-10 Years Black
KPop Demon Hunters£13.9328 rev
KPop Demon Hunters Tshirt Kpop Girls Tshirt Saja Boys Kids Clothes Short Sleeve Girls T-Shirts Ages 5 to 12 Years White
KPop Demon Hunters£8.3320 rev
Kpop Hunters Style Saja Boys Demon Purple Patterns Fake Tattoos
Struts£9.993 rev
Hoodie Kids Boys Kpop Costume- Fasion Pullover Anime Hoodie Kids Costume Hip Hop Streetwear Causal School Warm Oversized Long Sleeve Cartoon Print Hooded Sweatshirt Outwear Saj Merch Unisex 9-10Y
Kitimi£11.572 rev
Kitimi Jinu Costume Setfor Kid Teen Anime Movie Pop Black Demon Costume with Hat Chains Jewelry Saja Boys Costume Cosplay Outfits for Carnival Christmas Party Stage Dress-Up
Kitimi£35.303 rev
Trending
90-day click momentumMens Black Vintage Tailcoat Jacket Fancy Cool Cosplay Costume Robe
GOLDSTITCH£16.164.3★
KPop Demon Hunters Official Saja Boys Girls Pyjama Set 5-14 Years 2 Pcs Pjs Shorts & T-shirt Kpop Merch Gifts for Girls (9-10 Years Grey Saja Boys)
KPop Demon Hunters£14.984.6★
LOLANTA Unisex Kids Color Block Clothing Set Stylish Street Hip Hop Dance Costume 12-13 Years B-Blue 170
LOLANTA£28.264.4★
KPop Demon Hunters Tshirt Kpop Girls Tshirt Saja Boys Kids Clothes Short Sleeve Girls T-Shirts Ages 5 to 12 Years White
KPop Demon Hunters£8.334.9★
KPop Demon Hunters Tshirt K Pop Huntrix Girls T-Shirts Short Sleeve Summer Girls Top 9-10 Years Black
KPop Demon Hunters£13.934.8★
What buyers say about saja boys costume
What buyers praise and complain about, mined from review topics.What buyers love
“great quality costume”
“fit my child perfect”
“is good value for money”
What buyers complain about
“it is very very cheap material”
“Cheap”
“Poor quality”
“flimsy red ribbon”
“its basically fabric stitched into this shape”
Top return reasons
Common questions
- Is saja boys costume profitable to sell on Amazon United Kingdom?
- The niche generates £60K/yr across 17 tracked products. 0 of 13 products launched in the last 360 days are still selling. 90-day search growth is -63.0%. Flapen's verdict: Skip it (38/100).
- How competitive is the saja boys costume niche?
- 9 brands and 15 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 93% of demand.
- What do buyers complain about in saja boys costume?
- Top complaints mined from reviews: Material Quality, Value For Money, Quality-Overall. The return rate is 1.0%.
- What does it cost to enter the saja boys costume niche?
- Listings span £8.33–£36.07; the average listing price is £19.19 (sweet spot $15–$100). The average incumbent carries 237 reviews — the moat a new listing must climb.