---
title: "rengoku sword — Niche Verdict: Skip it (38/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/clothing-shoes-jewelry/rengoku-sword"
last_updated: "2026-07-14T03:13:57.968Z"
locale: en
meta:
  description: "a small market ($52K/yr) — rengoku sword doesn't clear our bar today."
  "og:description": "a small market ($52K/yr) — rengoku sword doesn't clear our bar today."
  "og:title": "rengoku sword — Niche Verdict: Skip it (38/100) | Amazon United States - Flapen"
---

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# **rengoku sword**

**Skip it**

A small market ($52K/yr) — this niche doesn't clear our bar today.

Market size 13Growth 20Conversion 21Competition 32Returns 59Price range 91Avg price 95Brand share 40Review moat 51Quality gap 42

**Avg price**

**Incredible****$39.63**

avg listing price — sweet spot $15–$100

**Price range**

**Great****$10.03–$98.62**

cheapest to priciest tracked listing — scored on the share inside $15–$100

**Returns**

**Good****2.6%**

return rate — above 6% kills the launch gate

**Review moat**

**Good****1,457.43**

avg incumbent reviews — the moat a new listing must climb

**Quality gap**

**Okay****4.5★**

avg incumbent rating — lower means beatable quality

**Brand share**

**Okay****81%**

top-5 brand share — brands hold most of the demand

**Competition**

**Okay****66%**

top-5 click share — leaders hold, buyers still browse

**Conversion**

**Bad****1.6%**

search→purchase rate — share of searches ending in a sale

**Growth**

**Bad****-9.2%**

90-day search growth — must beat 0% to launch

**Market size**

**Bad****$52K**

$52K/yr · 80K searches

## **Competition**

The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.

**Brands**

**10 **▼falling

**Sellers**

**12**

**Top-5 brand share**

**81%**

**Open market**

**19%**

- PZOEWUESR18% - Zisu17% - RG RENGENG15% - Sword Valley15% - Sword fort8% - SV8%

## **Product shelf**

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%4%$2K8%$4K12%$6K16%$8K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 14 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![Rengoku Sword. Demon Slayer Sword -41 inchfor Role-Playing and Collection.Anime Original Texture](https://m.media-amazon.com/images/I/41kaikYYb9L.jpg)**Rengoku Sword. Demon Slayer Sword -41 inchfor Role-Playing and Collection.Anime Original Texture**PZOEWUESR**$30.91**4.5★1,669 rev](https://www.amazon.com/dp/B09PYS5PNB) [2![RENGENG Light Up Rengoku Sword 40 Inches Rechargeable Plastic Anime Replica with Belt & Stand Original Texture Anime Sword](https://m.media-amazon.com/images/I/41w+uXZhcNL.jpg)**RENGENG Light Up Rengoku Sword 40 Inches Rechargeable Plastic Anime Replica with Belt & Stand Original Texture Anime Sword**RG RENGENG**$47.46**4.6★948 rev](https://www.amazon.com/dp/B0DBKZ267Q) [3![Sword Valley Rengoku Kyoujurou Sword - Slayers Katana40.9 LengthAnime Original Texture Carbon Steel Blade Carving SymbolNon-Slip Gripfor Cosplay & Display](https://m.media-amazon.com/images/I/51siSBy1f3L.jpg)**Sword Valley Rengoku Kyoujurou Sword - Slayers Katana40.9 LengthAnime Original Texture Carbon Steel Blade Carving SymbolNon-Slip Gripfor Cosplay & Display**Sword Valley**$42.12**4.5★1,793 rev](https://www.amazon.com/dp/B084ZM95ZQ) [4![Zisu Anime Rengoku Sword About 41 inches Hashira Pillars & Protagonist Sword Anime Original Texture (Red-Kyoujurou)](https://m.media-amazon.com/images/I/41w+194ze2L.jpg)**Zisu Anime Rengoku Sword About 41 inches Hashira Pillars & Protagonist Sword Anime Original Texture (Red-Kyoujurou)**Zisu**$33.97**4.6★6,362 rev](https://www.amazon.com/dp/B09B9DXM32) [5![Sword fort Handmade Katana Anime Cosplay Sword Stainless Steel Demon Sword Real Metal- Rengoku Kyoujurou](https://m.media-amazon.com/images/I/41ziueStuDL.jpg)**Sword fort Handmade Katana Anime Cosplay Sword Stainless Steel Demon Sword Real Metal- Rengoku Kyoujurou**Sword fort**$45.29**4.6★2,790 rev](https://www.amazon.com/dp/B08HMMBX9N)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![Zisu LED Glowing Anime Cosplay Sword Rengoku Sword - 40 Inch Rechargeable Light Up Sword with Stand & Belt](https://m.media-amazon.com/images/I/41zZmkJvVLL.jpg)**Zisu LED Glowing Anime Cosplay Sword Rengoku Sword - 40 Inch Rechargeable Light Up Sword with Stand & Belt**Zisu**$45.45**82 rev1y ago](https://www.amazon.com/dp/B0DZBS7GBR) [![RENGENG Light Up Rengoku Sword 40 Inches Rechargeable Plastic Anime Replica with Belt & Stand Original Texture Anime Sword](https://m.media-amazon.com/images/I/41w+uXZhcNL.jpg)**RENGENG Light Up Rengoku Sword 40 Inches Rechargeable Plastic Anime Replica with Belt & Stand Original Texture Anime Sword**RG RENGENG**$47.46**948 rev1y ago](https://www.amazon.com/dp/B0DBKZ267Q) [![Zisu Rengoku Sword - 23.6 Short Katana Replica for Kids - Complete with Belt Stand and True-to-Show Design - Rengoku Sword Ideal for Display](https://m.media-amazon.com/images/I/51Ld5K7FyeL.jpg)**Zisu Rengoku Sword - 23.6 Short Katana Replica for Kids - Complete with Belt Stand and True-to-Show Design - Rengoku Sword Ideal for Display**Zisu**$20.04**225 rev3y ago](https://www.amazon.com/dp/B0BZVGZJM8) [![Rengoku Cosplay Sword Foam Props for Kids - 31 inch](https://m.media-amazon.com/images/I/41i5YP+NYAL.jpg)**Rengoku Cosplay Sword Foam Props for Kids - 31 inch**PZOEWUESR**$29.43**840 rev3y ago](https://www.amazon.com/dp/B0BD4S6HL9) [![Full Tang Katana Rengoku Sword 41 Inches Samurai Sword Cosplay Anime Sword](https://m.media-amazon.com/images/I/41Z0ABcv2OL.jpg)**Full Tang Katana Rengoku Sword 41 Inches Samurai Sword Cosplay Anime Sword**wuton**$98.62**127 rev3y ago](https://www.amazon.com/dp/B0B8S9KQKX)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![Anime Rengoku Hanafuda Earrings - Accessories for Kimetsu No Yaiba Cosplay](https://m.media-amazon.com/images/I/41b3ALg+rjL.jpg)**Anime Rengoku Hanafuda Earrings - Accessories for Kimetsu No Yaiba Cosplay**SONGCHANGJEWELRY**$10.03**4.6★**▲ 732%**](https://www.amazon.com/dp/B08SLW44FG) [![Sword Valley Rengoku Kyoujurou Sword - Slayers Katana40.9 LengthAnime Original Texture Carbon Steel Blade Carving SymbolNon-Slip Gripfor Cosplay & Display](https://m.media-amazon.com/images/I/51siSBy1f3L.jpg)**Sword Valley Rengoku Kyoujurou Sword - Slayers Katana40.9 LengthAnime Original Texture Carbon Steel Blade Carving SymbolNon-Slip Gripfor Cosplay & Display**Sword Valley**$42.12**4.5★**▲ 195%**](https://www.amazon.com/dp/B084ZM95ZQ) [![Demon Slayer Sword for Cosplay with Belt Holder Stand 41 inches (Rengoku Kyoujurou)](https://m.media-amazon.com/images/I/411gRctP8GL.jpg)**Demon Slayer Sword for Cosplay with Belt Holder Stand 41 inches (Rengoku Kyoujurou)**AN SWALLOW**$29.94**4.5★**▲ 121%**](https://www.amazon.com/dp/B09M5SWHCF) [![Zisu Anime Rengoku Sword About 41 inches Hashira Pillars & Protagonist Sword Anime Original Texture (Red-Kyoujurou)](https://m.media-amazon.com/images/I/41w+194ze2L.jpg)**Zisu Anime Rengoku Sword About 41 inches Hashira Pillars & Protagonist Sword Anime Original Texture (Red-Kyoujurou)**Zisu**$33.97**4.6★**▲ 21%**](https://www.amazon.com/dp/B09B9DXM32) [![Rengoku Sword. Demon Slayer Sword -41 inchfor Role-Playing and Collection.Anime Original Texture](https://m.media-amazon.com/images/I/41kaikYYb9L.jpg)**Rengoku Sword. Demon Slayer Sword -41 inchfor Role-Playing and Collection.Anime Original Texture**PZOEWUESR**$30.91**4.5★**▲ 13%**](https://www.amazon.com/dp/B09PYS5PNB)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — -9.2% search growth over the last 90 days.

5K3KSpike '24Prime Day '25Spike '25Holiday '25 seasonSepDecMarJunAugNovMarMay

Peak months: Sep, Oct, Nov, Dec · busiest ÷ quietest = 6.1×

## **Reviews**

What buyers praise and complain about, mined from review topics.

### **What buyers love **

**Quality-Overall**75%

*“the sheath is quality”*

**Value For Money**25%

*“Worth the money”*

### **What buyers complain about **

**Defective Material/Parts**33%

*“My son was so excited just to get an item that was broken”*

**Wood Quality**33%

*“Only buy if you what a piece of broken wood”*

**Durability**33%

*“Does not last”*

### **Top return reasons **

**Defective Material/Parts**18%

**Size-Overall**16%

**Quality-Overall**11%

**Color**8%

**Functionality-Overall**7%

**Handle Quality**7%

**Sharpness**5%

**Advertised Vs Actual Product**5%

**Grip**4%

**Material Quality**4%