---
title: "ninja costume for girls — Niche Verdict: Skip it (36/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/clothing-shoes-jewelry/ninja-costume-for-girls"
last_updated: "2026-07-13T23:31:22.867Z"
locale: en
meta:
  description: "a small market ($0/yr) — ninja costume for girls doesn't clear our bar today."
  "og:description": "a small market ($0/yr) — ninja costume for girls doesn't clear our bar today."
  "og:title": "ninja costume for girls — Niche Verdict: Skip it (36/100) | Amazon United States - Flapen"
---

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# **ninja costume for girls**

**Skip it**

A small market ($0/yr) — this niche doesn't clear our bar today.

Market size 0Growth 15Conversion 0Competition 59Returns 26Price range 91Avg price 95Brand share 48Review moat 82Quality gap 43

**Avg price**

**Incredible****$25.14**

avg listing price — sweet spot $15–$100

**Price range**

**Great****$13.73–$37.92**

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

**Review moat**

**Great****364.48**

avg incumbent reviews — the moat a new listing must climb

**Competition**

**Good****49%**

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

**Brand share**

**Okay****76%**

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

**Quality gap**

**Okay****4.5★**

avg incumbent rating — lower means beatable quality

**Returns**

**Okay****5.9%**

return rate — above 6% kills the launch gate

**Growth**

**Bad****-20.1%**

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

**Market size**

**Bad****$0**

$0/yr · 79K searches

**Conversion**

**Bad****0.0%**

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

## **Competition**

The top 5 products take 49% of clicks — established leaders, but buyers still shop beyond them.

**Brands**

**14 **▲rising

**Sellers**

**49**

**Top-5 brand share**

**76%**

**Open market**

**19%**

- California Costumes32% - Rubies19% - TEENAGE MUTANT NINJA12% - Fun Costumes7% - Kepblom7% - Morph5%

## **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%5%$010%$015%$020%$01101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

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

All 29 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![Rubies Childs Pink Crystal Ninja Costume Medium](https://m.media-amazon.com/images/I/31c9-P67bQL.jpg)**Rubies Childs Pink Crystal Ninja Costume Medium**Rubies**$17.75**4.4★306 rev](https://www.amazon.com/dp/B01MZIBITH) [2![California Costumes Ninja Nightfire Childs Medium](https://m.media-amazon.com/images/I/41PZ4H+EuYL.jpg)**California Costumes Ninja Nightfire Childs Medium**California Costumes**$32.87**4.6★162 rev](https://www.amazon.com/dp/B0CCXG5JQW) [3![Teenage Mutant Ninja Turtles Raphael Little Girls Scuba Cosplay Hooded Tulle Tutu Dress Green/Pink 7-8](https://m.media-amazon.com/images/I/41Bunb3S4AL.jpg)**Teenage Mutant Ninja Turtles Raphael Little Girls Scuba Cosplay Hooded Tulle Tutu Dress Green/Pink 7-8**TEENAGE MUTANT NINJA**$24.49**4.8★51 rev](https://www.amazon.com/dp/B0DY8DY4H8) [4![Fun Costumes Girls Rainbow Ninja Costume - Jumpsuit Dragon Drape Waist Sash & Iridescent Details Small Black](https://m.media-amazon.com/images/I/41CsY2DKosL.jpg)**Fun Costumes Girls Rainbow Ninja Costume - Jumpsuit Dragon Drape Waist Sash & Iridescent Details Small Black**Fun Costumes**$37.92**4.2★44 rev](https://www.amazon.com/dp/B01LX6SX8U) [5![California Costumes Girls Black Ninja Costume Large](https://m.media-amazon.com/images/I/41154J4G0xL.jpg)**California Costumes Girls Black Ninja Costume Large**California Costumes**$23.53**4.6★818 rev](https://www.amazon.com/dp/B01L4OS3U4)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![California Costumes Girls Ninja-X Widow Strike Size L](https://m.media-amazon.com/images/I/31cg03NbRKL.jpg)**California Costumes Girls Ninja-X Widow Strike Size L**California Costumes**$37.77**3 rev11mo ago](https://www.amazon.com/dp/B0FHXMG6XN) [![Teenage Mutant Ninja Turtles Raphael Little Girls Scuba Cosplay Hooded Tulle Tutu Dress Green/Pink 7-8](https://m.media-amazon.com/images/I/41Bunb3S4AL.jpg)**Teenage Mutant Ninja Turtles Raphael Little Girls Scuba Cosplay Hooded Tulle Tutu Dress Green/Pink 7-8**TEENAGE MUTANT NINJA**$24.49**51 rev1y ago](https://www.amazon.com/dp/B0DY8DY4H8) [![Teenage Mutant Ninja Turtles Raphael Toddler Girls Scuba Cosplay Hooded Tulle Tutu Dress Green/Pink 2T](https://m.media-amazon.com/images/I/41Bunb3S4AL.jpg)**Teenage Mutant Ninja Turtles Raphael Toddler Girls Scuba Cosplay Hooded Tulle Tutu Dress Green/Pink 2T**TEENAGE MUTANT NINJA**$24.34**51 rev1y ago](https://www.amazon.com/dp/B0DY92W7ML) [![Bad boy league Girls Ninja Costumes Deluxe Girl Ninja Costume Set for Kids Halloween Role Playing Theme Parties(Kids-XL-10/12T Black)](https://m.media-amazon.com/images/I/41LpzobhAsL.jpg)**Bad boy league Girls Ninja Costumes Deluxe Girl Ninja Costume Set for Kids Halloween Role Playing Theme Parties(Kids-XL-10/12T Black)**Bad boy league**$21.54**23 rev1y ago](https://www.amazon.com/dp/B0DSSYFSC6) [![Onirii 66 Inch Kids Inflatable Punching Bag](https://m.media-amazon.com/images/I/41igY5lNLoL.jpg)**Onirii 66 Inch Kids Inflatable Punching Bag**Onirii**$27.68**238 rev1y ago](https://www.amazon.com/dp/B0D9NFVW8C)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![Teenage Mutant Ninja Turtles Raphael Little Girls Scuba Cosplay Hooded Tulle Tutu Dress Green/Pink 7-8](https://m.media-amazon.com/images/I/41Bunb3S4AL.jpg)**Teenage Mutant Ninja Turtles Raphael Little Girls Scuba Cosplay Hooded Tulle Tutu Dress Green/Pink 7-8**TEENAGE MUTANT NINJA**$24.49**4.8★**▲ 810%**](https://www.amazon.com/dp/B0DY8DY4H8) [![Kepblom Girls Shiny Metallic Mock Neck Unitard Long Sleeve Zipper Back One Piece Bodysuit Costume](https://m.media-amazon.com/images/I/31PFIozpq1L.jpg)**Kepblom Girls Shiny Metallic Mock Neck Unitard Long Sleeve Zipper Back One Piece Bodysuit Costume**Kepblom**$28.23**4.4★**▲ 798%**](https://www.amazon.com/dp/B07MPF5491) [![Teenage Mutant Ninja Turtles Raphael Toddler Girls Scuba Cosplay Hooded Tulle Tutu Dress Green/Pink 2T](https://m.media-amazon.com/images/I/41Bunb3S4AL.jpg)**Teenage Mutant Ninja Turtles Raphael Toddler Girls Scuba Cosplay Hooded Tulle Tutu Dress Green/Pink 2T**TEENAGE MUTANT NINJA**$24.34**4.8★**▲ 785%**](https://www.amazon.com/dp/B0DY92W7ML) [![Youth Ask Me About My Ninja Disguise Flip Halloween Costume Tee Black S](https://m.media-amazon.com/images/I/41t+-LTwZoL.jpg)**Youth Ask Me About My Ninja Disguise Flip Halloween Costume Tee Black S**Crazy Dog T-Shirts**$13.73**4.5★**▲ 764%**](https://www.amazon.com/dp/B00KHBT2Q0) [![Kepblom Girls Shiny Metallic Mock Neck Unitard Long Sleeve Zipper Back One Piece Bodysuit Costume](https://m.media-amazon.com/images/I/319hlDugeiL.jpg)**Kepblom Girls Shiny Metallic Mock Neck Unitard Long Sleeve Zipper Back One Piece Bodysuit Costume**Kepblom**$28.10**4.4★**▲ 764%**](https://www.amazon.com/dp/B07MBG1C8M)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — -20.1% search growth over the last 90 days.

9K7KSpike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay

Peak months: Sep, Oct · busiest ÷ quietest = 21.1×

## **Reviews**

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

### **What buyers love **

**Size-Overall**26%

*“Fits perfectly”*

**Quality-Overall**18%

*“Good quality”*

**Value For Money**10%

*“it's a great value for the price”*

**Fun/Entertainment Experience**8%

*“fun”*

**Durability**5%

*“Super durable my heavy handed daughter ground”*

**Efficiency**5%

*“Works well”*

**Leak-Proof**5%

*“So far no leaks thank goodness”*

**Material Quality**3%

*“Nice material”*

**Print Quality**3%

*“Logo done nicely”*

**Color**2%

*“Love the color and the idea,”*

### **What buyers complain about **

**Size-Overall**23%

*“It was very tell to big for my kids”*

**Leak-Proof**17%

*“it has a slow leak upon arrival”*

**Quality-Overall**13%

*“Junk / worthless”*

**Smell**12%

*“the gloves smelled”*

**Strength**8%

*“Not as sturdy as it looks”*

**Durability**8%

*“Not ideal for long term”*

**Inflation/Deflation**5%

*“it wouldnt stay inflated”*

**Advertised Vs Actual Product**4%

*“Not as described Junk”*

**Instructions/User Manual/Troubleshooting**2%

*“was missing instructions”*

### **Top return reasons **

**Size-Overall**61%

**Leak-Proof**4%

**Functionality-Overall**3%

**Length**3%

**Advertised Vs Actual Product**3%

**Material Quality**2%

**Defective Material/Parts**2%

**Sleeve Fit**2%

**Color**2%

**Width**2%