---
title: "Berserk Sword — $51K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/berserk-sword"
last_updated: "2026-08-09T20:29:31.943Z"
locale: en
meta:
description: "Niche score 32/100 · $51K/yr market · 81K searches/yr · $96.11 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 32/100 · $51K/yr market · 81K searches/yr · $96.11 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Berserk Sword — $51K/yr Amazon US Niche (2026) - Flapen"
---
# **berserk sword**
**Skip it**
Brand-locked demand (top 5 brands take 98% of clicks) — this niche doesn't clear our bar today.
Market size 13Growth 24Conversion 8Competition 18Returns 72Price range 34Avg price 76Brand share 4Review moat 98Quality gap 47
**Review moat**
**Incredible****39.73**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Great****$96.11**
avg listing price — sweet spot $15–$100
**Returns**
**Good****2.1%**
return rate — above 5% kills the launch gate
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Price range**
**Okay****$14.42–$267.45**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Bad****-1.2%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****79%**
top-5 click share — a locked-up shelf
**Market size**
**Bad****$51K**
$51K/yr · 81K searches
**Conversion**
**Bad****0.7%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Bad****98%**
top-5 brand share — brand-locked demand
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, berserk sword is a $51K/yr Amazon United States market (81K searches/yr). The top 5 brands hold 98% of demand. Demand peaks in Sep–Oct–Nov–Dec. Verdict: Skip it — 32/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **berserk sword market data**
- **Units sold / yr**
- **500–750**
- avg 0–100/product
- **Revenue / yr**
- **$48K–$72K**
- units × avg price
- **Conversion rate**
- **0.7%**
- **Avg BSR**
- **#2,830**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **64%**
- **Out of stock**
- **6.0%**
- **Avg brand age**
- **48 months**
- **Avg seller age**
- **187 days**
## **Competition & brand share**
The top 5 products capture 79% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**6 **▼falling
**Sellers**
**9**
**Top-5 brand share**
**98%**
Top 20: 100%
**Top-5 click share**
**79%**
Top 20: 100%
**Open market**
**0%**
- Heartcos42% - Kbtany30% - damdos11% - Mullike7% - LALAPORT7% - Blazing Steel2%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -1.2% search growth over the last 90 days.
4K3KSpike '24Prime Day '25Spike '25Holiday '25 seasonSepDecMarJunAugNovMarMay
Peak months: Sep, Oct, Nov, Dec · busiest ÷ quietest = 2.7×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/berserk-sword/trend)
## **Top berserk sword search terms**
- **guts sword**31K/yr-2.6%0.3% conv. - **berserk sword**20K/yr-6.2%0.6% conv. - **dragon slayer sword**16K/yr-16.1%0.2% conv. - **dragonslayer sword**10K/yr+29.7%0.1% conv. - **guts sword berserk**3K/yr+20.6%0.6% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/berserk-sword/search-terms)
## **Top berserk 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%10%$5K20%$10K30%$15K40%$20K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)2 products missing review or click data not plotted
All 11 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Berserker Guts Sword & Sacrifice Mark Necklace Keychain Set - Gift for Fans**Kbtany**$14.67**3.8★21 rev](https://www.amazon.com/dp/B0DS9J6M96) [2**60 Berserk Guts Dragon Slayer Sword Heavy Duty Version - 16.8lbs Stainless Steel Blade Giant Anime Collectible Replica for Display**Heartcos**$267.45**4.6★7 rev](https://www.amazon.com/dp/B0F9WGMJKZ) [3**damdos Halloween Prop Dragoner Guts Foam Sword Black Great Sword Role Play Fantasey Anime Cosplay Costume Birthdays Gifts**damdos**$34.27**4.6★97 rev](https://www.amazon.com/dp/B0BXSHD3JL) [4**Mullike Brand Of Sacrifice Rune Pendant Necklace Keychain Guts Sword Keychain Red Logo Cosplay Prop Jewelry Gift for Men Fans (Brand Of Sacrifice)**Mullike**$14.42**4.4★135 rev](https://www.amazon.com/dp/B0BZMHMHC1) [5**Heartcos 57 Anime Berserk Guts Sword Lengthen PU Material Dragon Slayer Great Foam Sword Guts Cosplay Props**Heartcos**$75.50**4.8★23 rev](https://www.amazon.com/dp/B0D32F9PH2)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**59 Berserk Guts Dragon Slayer Sword Heavy Duty Version - 13.45 lbs Stainless Steel Blade Giant Anime Collectible Replica for Display**Heartcos**$246.03**0 rev10mo ago](https://www.amazon.com/dp/B0FQ4PMX52) [**49 Anime Berserk Guts Sword Dragon Slayer Great Steel Sword with Carry Bag Full Metal Cosplay Prop for Collection Stage Performance**Heartcos**$139.50**0 rev11mo ago](https://www.amazon.com/dp/B0FJ262D2F) [**60 Berserk Guts Dragon Slayer Sword Heavy Duty Version - 16.8lbs Stainless Steel Blade Giant Anime Collectible Replica for Display**Heartcos**$267.45**7 rev1y ago](https://www.amazon.com/dp/B0F9WGMJKZ) [**Berserker Guts Sword & Sacrifice Mark Necklace Keychain Set - Gift for Fans**Kbtany**$14.67**21 rev1y ago](https://www.amazon.com/dp/B0DS9J6M96) [**54 Anime Berserk Guts Metal Sword Stainless Steels Guts Cosplay Big Sword with Leather Scabbard for Cosplay Collection Showcase**Heartcos**$134.59**9 rev1y ago](https://www.amazon.com/dp/B0DJMC2JHY)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Berserker Guts Sword & Sacrifice Mark Necklace Keychain Set - Gift for Fans**Kbtany**$14.67**3.8★**▲ 122%**](https://www.amazon.com/dp/B0DS9J6M96) [**59 Berserk Guts Dragon Slayer Sword Heavy Duty Version - 13.45 lbs Stainless Steel Blade Giant Anime Collectible Replica for Display**Heartcos**$246.03**0.0★**▲ 115%**](https://www.amazon.com/dp/B0FQ4PMX52) [**Mullike Brand Of Sacrifice Rune Pendant Necklace Keychain Guts Sword Keychain Red Logo Cosplay Prop Jewelry Gift for Men Fans (Brand Of Sacrifice)**Mullike**$14.42**4.4★**▲ 57%**](https://www.amazon.com/dp/B0BZMHMHC1) [**Blazing Steel Fantasy Foam Dragon Slayer Berserk Guts Sword Anime Cosplay & Costume (Different Size to Choose from)**Blazing Steel**$31.85**4.7★**▲ 39%**](https://www.amazon.com/dp/B0BV5DBZVS) [**49 Anime Berserk Guts Sword Dragon Slayer Great Steel Sword with Carry Bag Full Metal Cosplay Prop for Collection Stage Performance**Heartcos**$139.50**0.0★**▲ 17%**](https://www.amazon.com/dp/B0FJ262D2F)
**~~View all trending →~~**
## **What buyers say about berserk sword**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**21%
*“Way better than I thought it would be for the price”*
**Advertised Vs Actual Product**14%
*“came as stated”*
**Quality-Overall**14%
*“Excellent quality”*
**Sharpness**7%
*“The blade is stunning”*
**Exercise/Sports Suitability**5%
*“I'd say this is a really nice sword to have and exercise with”*
**Weight Heavy**5%
*“Giant and heavy, with a very sturdy handle”*
**Size-Overall**5%
*“The size is a lot bigger in person which is great too”*
**Measurement/Reading Accuracy**5%
*“it's also very accurate to the real one”*
### **What buyers complain about **
**Weight Heavy**25%
*“It's definitely heavier than 16 pounds”*
**Size-Overall**14%
*“is very big”*
**Quality-Overall**8%
*“Not made well”*
**Strength**8%
*“Was not sturdy”*
**Sharpness**6%
*“I would definitely sharpen it since it does come dull”*
### **Top return reasons **
**Weight Heavy**14%
**Size-Overall**14%
**Material Quality**14%
**Scratch Resistance**14%
**Quality-Overall**14%
**Advertised Vs Actual Product**14%
**Defective Material/Parts**7%
**Cushion**7%
## **Common questions**
- **Is berserk sword profitable to sell on Amazon United States?**
- The niche generates $51K/yr across 11 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -1.2%. Flapen's verdict: Skip it (32/100).
- **How competitive is the berserk sword niche?**
- 6 brands and 9 sellers compete. The top 5 products take 79% of clicks and top 5 brands hold 98% of demand.
- **What do buyers complain about in berserk sword?**
- Top complaints mined from reviews: Weight Heavy, Size-Overall, Quality-Overall. The return rate is 2.1%.
- **When does demand for berserk sword peak?**
- Demand peaks in Sep–Oct–Nov–Dec; the busiest month runs 2.7× the quietest.
- **What does it cost to enter the berserk sword niche?**
- Listings span $14.42–$267.45; the average listing price is $96.11 (sweet spot $15–$100). The average incumbent carries 40 reviews — the moat a new listing must climb.
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