---
title: "Demon Slayer Sword — £10K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/toys-games/demon-slayer-sword"
last_updated: "2026-07-31T15:32:01.214Z"
locale: en
meta:
description: "Niche score 48/100 · £10K/yr market · 114K searches/yr · £23.99 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 48/100 · £10K/yr market · 114K searches/yr · £23.99 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Demon Slayer Sword — £10K/yr Amazon UK Niche (2026) - Flapen"
---
# **demon slayer sword**
**Skip it**
A small market ($10K/yr) — this niche doesn't clear our bar today.
Market size 2Growth 13Conversion 5Competition 73Returns 87Price range 74Avg price 95Brand share 70Review moat 91Quality gap 58
**Avg price**
**Incredible****£23.99**
avg listing price — sweet spot $15–$100
**Review moat**
**Great****184.39**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Great****1.4%**
return rate — above 5% kills the launch gate
**Price range**
**Good****£7.53–£36.14**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Good****41%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Good****63%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-23.6%**
90-day search growth — must beat 0% to launch
**Conversion**
**Bad****0.4%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Bad****£10K**
£10K/yr · 114K searches
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=uk&signal=no_dominant_brand "Top brand's click share < 20%") [** Low Review Barrier**](https://flapen.com/research/niches?market=uk&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United Kingdom niche tracking, demon slayer sword is a £10K/yr Amazon United Kingdom market (114K searches/yr). The top 5 brands hold 63% of demand. Verdict: Skip it — 48/100.
Data updated Jul 29, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **demon slayer sword market data**
- **Units sold / yr**
- **750–1K**
- avg 0–100/product
- **Revenue / yr**
- **£18K–£24K**
- units × avg price
- **Conversion rate**
- **0.4%**
- **Avg BSR**
- **#733**
- **Page quality**
- **0%**
- **Prime**
- **74%**
- **Sponsored**
- **71%**
- **Out of stock**
- **13.4%**
- **Avg brand age**
- **30 months**
- **Avg seller age**
- **197 days**
## **Competition & brand share**
The top 5 products take 41% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**16 **▲rising
**Sellers**
**22**
**Top-5 brand share**
**63%**
Top 20: 100%
**Top-5 click share**
**41%**
Top 20: 91%
**Open market**
**30%**
- Loocaa18% - Udekit18% - KHHK10% - 57 SPECIAL REPLICAS9% - Weeb Keychains9% - Kimimara7%
## **Demand**
Weekly Amazon search volume, last 31 weeks — -23.6% search growth over the last 90 days.
3K2KDec '25Feb '26Mar '26Apr '26May '26Jun '26
[**Open Trend **](https://flapen.com/research/uk/toys-games/demon-slayer-sword/trend)
## **Top demon slayer sword search terms**
- **demon slayer sword**77K/yr-26.8%0.5% conv. - **anime sword**15K/yr-7.3%0.2% conv. - **demon slayer katana**12K/yr-27.0%0.1% conv. - **demon slayer swords**10K/yr-23.2%0.0% conv. [**All search terms **](https://flapen.com/research/uk/toys-games/demon-slayer-sword/search-terms)
## **Top demon slayer sword 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.
0%3%£2956%£5909%£88512%£1K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Udekit Japanese Anime Ninja Bamboo Sword Katana-41inches(104cm) with Belt and Sword Holder For Kids Aldult Cosplay Costume Halloween Dress-Up Carnival and Anime Party**Udekit**£26.77**4.4★144 rev](https://www.amazon.co.uk/dp/B0GSW1WZSS) [2**Loocaa Demon Animes Stocking Fillers - Bamboo Sword Kids Teenager Cosplay Sword Halloween Christmas Party Anime Tanjiro Cosplay - Size 76 cm For Child (Rengoku Kyoujurou)**Loocaa**£22.21**4.4★118 rev](https://www.amazon.co.uk/dp/B0CYGG6KJD) [3**Weeb Keychains Demon Slayer Merch Nezuko Kamado Anime Accessory with Bamboo Muzzle Charm & Haori Plate Premium Zinc Alloy Keychain Durable for Bags or Keys Lightweight Holds Its Finish**Weeb Keychains**£13.54**4.7★232 rev](https://www.amazon.co.uk/dp/B0CKVWM86S) [4**31inch Demon Anime Samurai Sword With Sheath Bamboo Replica Ninja Katana**KHHK**£16.30**4.8★18 rev](https://www.amazon.co.uk/dp/B0DYDRDM45) [5**Loocaa Animes Sword Bamboo Sword Cosplay Sword - Kamado Tanjirou - Christmas Halloween Party Anime Size 76 cm For Child Gift for Kids Teenager**Loocaa**£21.12**4.4★118 rev](https://www.amazon.co.uk/dp/B0CYC3TY63)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**41inch Demon Anime Samurai Sword For Adult Wooden Cosplay Prop Ninja Katana**KHHK**£14.17**0 rev2mo ago](https://www.amazon.co.uk/dp/B0H14SFNGF) [**Udekit Japanese Anime Ninja Bamboo Sword Katana-41inches(104cm) with Belt and Sword Holder For Kids Aldult Cosplay Costume Halloween Dress-Up Carnival and Anime Party**Udekit**£26.77**144 rev4mo ago](https://www.amazon.co.uk/dp/B0GSW1WZSS) [**Udekit Japanese Anime Ninja Bamboo Sword Katana-41inches(104cm) with Belt and Sword Holder For Kids Aldult Cosplay Costume Halloween Dress-Up Carnival and Anime Party**Udekit**£27.42**144 rev8mo ago](https://www.amazon.co.uk/dp/B0G3W22TR9) [**Udekit Japanese Anime Ninja Bamboo Sword Katana-41inches(104cm) with Belt and Sword Holder For Kids Aldult Cosplay Costume Halloween Dress-Up Carnival and Anime Party**Udekit**£27.09**144 rev8mo ago](https://www.amazon.co.uk/dp/B0G1M2R5SD) [**Demon Slayer - Sword Lightsaber Lightsaber Katana LED Samurai Sword with LED Blade with Sheath Anime Fans Anime Cosplay for Adults and Children (Giyuu Tomioka)**Swords and more**£35.08**7 rev9mo ago](https://www.amazon.co.uk/dp/B0FTLCLGM9)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**41inch Demon Anime Samurai Sword For Adult Wooden Cosplay Prop Ninja Katana**KHHK**£14.17**0.0★**▲ 259%**](https://www.amazon.co.uk/dp/B0H14SFNGF) [**Weeb Keychains Demon Slayer Merch Nezuko Kamado Anime Accessory with Bamboo Muzzle Charm & Haori Plate Premium Zinc Alloy Keychain Durable for Bags or Keys Lightweight Holds Its Finish**Weeb Keychains**£13.54**4.7★**▲ 250%**](https://www.amazon.co.uk/dp/B0CKVWM86S) [**Weeb Keychains Demon Slayer Merch Tanjiro Anime Charm with Nichirin Sword & Haori Plate Premium Zinc Alloy Keychain Durable for Bags or Keys Lightweight Holds Its Finish**Weeb Keychains**£14.34**4.7★**▲ 219%**](https://www.amazon.co.uk/dp/B0CKVXDV5R) [**Demon Slayer - Sword Lightsaber Lightsaber Katana LED Samurai Sword with LED Blade with Sheath Anime Fans Anime Cosplay for Adults and Children (Giyuu Tomioka)**Swords and more**£35.08**4.7★**▲ 215%**](https://www.amazon.co.uk/dp/B0FTLCLGM9) [**Loocaa Demon Animes Stocking Fillers - Bamboo Sword Kids Teenager Cosplay Sword Halloween Christmas Party Anime Tanjiro Cosplay - Size 76 cm For Child (Rengoku Kyoujurou)**Loocaa**£22.21**4.4★**▲ 208%**](https://www.amazon.co.uk/dp/B0CYGG6KJD)
**~~View all trending →~~**
## **What buyers say about demon slayer sword**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**44%
*“Amazing quality”*
**Value For Money**8%
*“Best value for Cosplay props”*
**Advertised Vs Actual Product**8%
*“as expected”*
**Design-Overall**6%
*“I really like the design on this sword though I didn't finsh it”*
**Size-Overall**6%
*“Good size”*
**Durability**5%
*“durable”*
**Gifting Purpose**4%
*“Great gift for my anime-loving 11yo”*
**Fun/Entertainment Experience**3%
*“Good toy sword”*
**Color**2%
*“Great colours & seems well made”*
**Strength**2%
*“its not particularly fragile either”*
### **What buyers complain about **
**Quality-Overall**25%
*“Quality not great”*
**Assembly/Installation**20%
*“found that the main components to build it were wrong”*
**Print Quality**7%
**Value For Money**5%
*“Value for money awful”*
**Size-Overall**5%
*“could definitely be bigger for an adult”*
**Instructions/User Manual/Troubleshooting**5%
*“Instruction are not straight forward or have the right picture of the sword”*
### **Top return reasons **
**Defective Material/Parts**22%
**Quality-Overall**17%
**Size-Overall**13%
**Advertised Vs Actual Product**6%
**Assembly/Installation**6%
**Material Quality**6%
**Strength**5%
**Ease Of Use**4%
**Mechanism Issues**3%
**Weight Light**2%
## **Common questions**
- **Is demon slayer sword profitable to sell on Amazon United Kingdom?**
- The niche generates £10K/yr across 31 tracked products. 0 of 9 products launched in the last 360 days are still selling. 90-day search growth is -23.6%. Flapen's verdict: Skip it (48/100).
- **How competitive is the demon slayer sword niche?**
- 16 brands and 22 sellers compete. The top 5 products take 41% of clicks and top 5 brands hold 63% of demand.
- **What do buyers complain about in demon slayer sword?**
- Top complaints mined from reviews: Quality-Overall, Assembly/Installation, Print Quality. The return rate is 1.4%.
- **What does it cost to enter the demon slayer sword niche?**
- Listings span £7.53–£36.14; the average listing price is £23.99 (sweet spot $15–$100). The average incumbent carries 184 reviews — the moat a new listing must climb.
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