---
title: "Blue Ninja Costume Kids — $0/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/blue-ninja-costume-kids"
last_updated: "2026-08-10T15:44:12.329Z"
locale: en
meta:
description: "Niche score 26/100 · $0/yr market · 32K searches/yr · $26.69 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 26/100 · $0/yr market · 32K searches/yr · $26.69 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Blue Ninja Costume Kids — $0/yr Amazon US Niche (2026) - Flapen"
---
# **blue ninja costume kids**
**Skip it**
A small market ($0/yr) — this niche doesn't clear our bar today.
Market size 0Growth 31Conversion 0Competition 28Returns 22Price range 88Avg price 95Brand share 7Review moat 43Quality gap 24
**Avg price**
**Incredible****$26.69**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$13.28–$33.72**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Okay****2,166.08**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Okay****+4.9%**
90-day search growth — must beat 0% to launch
**Competition**
**Okay****68%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Returns**
**Bad****5.8%**
return rate — above 5% kills the launch gate
**Brand share**
**Bad****97%**
top-5 brand share — brand-locked demand
**Market size**
**Bad****$0**
$0/yr · 32K searches
**Conversion**
**Bad****0.0%**
search→purchase rate — share of searches ending in a sale
**Signals**[** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United States niche tracking, blue ninja costume kids is a $0/yr Amazon United States market (32K searches/yr). The top 5 brands hold 97% of demand. Demand peaks in Sep–Oct–Nov. Verdict: Skip it — 26/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **blue ninja costume kids market data**
- **Units sold / yr**
- **500–750**
- avg 0–100/product
- **Revenue / yr**
- **$13K–$20K**
- units × avg price
- **Conversion rate**
- **0.0%**
- **Avg BSR**
- **#1,879**
- **Page quality**
- **0%**
- **Prime**
- **92%**
- **Sponsored**
- **83%**
- **Out of stock**
- **30.4%**
- **Avg brand age**
- **53 months**
- **Avg seller age**
- **178 days**
## **Competition & brand share**
The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**6 **—flat
**Sellers**
**8**
**Top-5 brand share**
**97%**
Top 20: 100%
**Top-5 click share**
**68%**
Top 20: 100%
**Open market**
**0%**
- Spooktacular Creations32% - Fun Costumes29% - SATKULL18% - Bosvin10% - Missanabie8% - Runcati3%
## **Demand & seasonality**
Weekly Amazon search volume, last 84 weeks — +4.9% search growth over the last 90 days.
5K3KSpike '25Prime Day '25Spike '26 seasonDecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Sep, Oct, Nov · busiest ÷ quietest = 35.5×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/blue-ninja-costume-kids/trend)
## **Top blue ninja costume kids search terms**
- **blue ninja costume**9K/yr+15.0%1.1% conv. - **blue ninja**4K/yr+20.0%0.6% conv. - **blue ninja costume kids**19K/yr-42.8%2.5% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/blue-ninja-costume-kids/search-terms)
## **Top blue ninja costume kids 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%$020%$030%$040%$01101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 12 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Fun Costumes Kids Regal Blue Ninja Costume | Ninja Costumes - Small - Black blue**Fun Costumes**$19.61**4.6★9 rev](https://www.amazon.com/dp/B0CBSPN3LB) [2**SATKULL Blue Ninja Costume for Kids Ninja Deluxe Costumes Set with Ninjas Accessories for Boy Dress Up(Kids-L-8/9T)**SATKULL**$22.35**4.7★2,514 rev](https://www.amazon.com/dp/B0BK4NHFK8) [3**Spooktacular Creations Kids Halloween Ninja Costume Blue Black Ninja Kung-Fu Outfit for Boys Teen Halloween Costumes for DressUp and Themed Party (Medium 8-10 yrs)**Spooktacular Creations**$30.45**4.6★2,532 rev](https://www.amazon.com/dp/B08BWKXNT6) [4**Spooktacular Creations Halloween Ninja Costume Blue Ninja Outfit Set for Kids Halloween Costumes with Accessories for Boys Dress Up and Role Play Party (Small 5-7 yrs)**Spooktacular Creations**$30.40**4.7★10,729 rev](https://www.amazon.com/dp/B0B1PY7689) [5**3PCS Anime Costume Ninja Costume Ninja Accessories Role Cosplay Outfit Halloween Fancy Cool Costume(L)**Missanabie**$13.28**4.4★4 rev](https://www.amazon.com/dp/B0D97HMFPV)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Runcati Mens Renaissance Hooded Cloak Medieval Samurai Witch Vampire Cape Wizard Raven Halloween Costume**Runcati**$24.73**26 rev5mo ago](https://www.amazon.com/dp/B0GH6CBCF9) [**3PCS Anime Costume Ninja Costume Ninja Accessories Role Cosplay Outfit Halloween Fancy Cool Costume(L)**Missanabie**$13.28**4 rev1y ago](https://www.amazon.com/dp/B0D97HMFPV) [**Kids Ninjia Costume - Boys & Girls Muscle Ninja Costume Suit with Deluxe Ninja Toys Halloween Cospaly Dress Up (Blue) 10-12 Years**Bosvin**$30.05**234 rev2y ago](https://www.amazon.com/dp/B0D2RT3SDH) [**Kids Ninjia Costume - Muscle Ninja Costume Suit with Deluxe Ninja Toys for Little Boys & Girls Halloween Cospaly Dress Up (Blue) 5T 6-7 Years**Bosvin**$33.72**234 rev2y ago](https://www.amazon.com/dp/B0D2RQ9C4J) [**Spooktacular Creations Halloween Ninja Costume Kids Blue Silver Ninja Dragon Jumpsuit Set Boys Halloween Costume for DressUp and RolePlay Party (Large 10-12 yrs)**Spooktacular Creations**$32.77**4,066 rev2y ago](https://www.amazon.com/dp/B0CZNGJHJ8)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Runcati Mens Renaissance Hooded Cloak Medieval Samurai Witch Vampire Cape Wizard Raven Halloween Costume**Runcati**$24.73**4.4★**▲ 936%**](https://www.amazon.com/dp/B0GH6CBCF9) [**3PCS Anime Costume Ninja Costume Ninja Accessories Role Cosplay Outfit Halloween Fancy Cool Costume(L)**Missanabie**$13.28**4.4★**▲ 825%**](https://www.amazon.com/dp/B0D97HMFPV) [**Fun Costumes Kids Regal Blue Ninja Costume | Ninja Costumes - Small - Black blue**Fun Costumes**$19.61**4.6★**▲ 502%**](https://www.amazon.com/dp/B0CBSPN3LB) [**Spooktacular Creations Halloween Ninja Costume Kids Blue Silver Ninja Dragon Jumpsuit Set Boys Halloween Costume for DressUp and RolePlay Party (Large 10-12 yrs)**Spooktacular Creations**$32.77**4.6★**▲ 378%**](https://www.amazon.com/dp/B0CZNGJHJ8) [**Spooktacular Creations Kids Halloween Ninja Costume Blue Black Ninja Kung-Fu Outfit for Boys Teen Halloween Costumes for DressUp and Themed Party (Medium 8-10 yrs)**Spooktacular Creations**$30.45**4.6★**▲ 283%**](https://www.amazon.com/dp/B08BWKXNT6)
**~~View all trending →~~**
## **What buyers say about blue ninja costume kids**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**25%
*“The value for the price seems good”*
**Quality-Overall**16%
*“Really fantastic quality”*
**Size-Overall**10%
*“Great price and accurate size description”*
**Washability**6%
*“Has survived many washes”*
**Color**6%
*“The color is accurate to the photos”*
**Material Quality**4%
*“The material feels better than expected”*
**Gifting Purpose**3%
*“it was his favorite present”*
**Adjustability/Rotatability/Reclining**3%
*“easy to adjust”*
**Warmth**2%
*“the nicer fabric makes it warmer”*
**Advertised Vs Actual Product**2%
*“Better than it should be”*
### **What buyers complain about **
**Thickness**17%
*“not like the super thin costume material some of these come with”*
**Size-Overall**9%
*“The only downsides for me are the fit”*
**Material Quality**5%
*“The material is kind of thin so probably won't hold up to too much wear and tear”*
**Arm Fit**4%
*“The arm holes are also pretty tight”*
**Weight Heavy**4%
*“heavier than I expected”*
### **Top return reasons **
**Size-Overall**65%
**Material Quality**8%
**Color**7%
**Smell**3%
**Product Condition**3%
**Defective Material/Parts**2%
**Sleeve Fit**2%
**Thin**2%
**Comfort-Overall**2%
**Chest Fit**2%
## **Common questions**
- **Is blue ninja costume kids profitable to sell on Amazon United States?**
- The niche generates $0/yr across 12 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +4.9%. Flapen's verdict: Skip it (26/100).
- **How competitive is the blue ninja costume kids niche?**
- 6 brands and 8 sellers compete. The top 5 products take 68% of clicks and top 5 brands hold 97% of demand.
- **What do buyers complain about in blue ninja costume kids?**
- Top complaints mined from reviews: Thickness, Size-Overall, Material Quality. The return rate is 5.8% — above our launch gate.
- **When does demand for blue ninja costume kids peak?**
- Demand peaks in Sep–Oct–Nov; the busiest month runs 35.5× the quietest.
- **What does it cost to enter the blue ninja costume kids niche?**
- Listings span $13.28–$33.72; the average listing price is $26.69 (sweet spot $15–$100). The average incumbent carries 2,166 reviews — the moat a new listing must climb.
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