---
title: "Ninja Costume Women — $13K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/ninja-costume-women"
last_updated: "2026-08-10T10:12:11.277Z"
locale: en
meta:
description: "Niche score 42/100 · $13K/yr market · 384K searches/yr · $29.71 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 42/100 · $13K/yr market · 384K searches/yr · $29.71 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Ninja Costume Women — $13K/yr Amazon US Niche (2026) - Flapen"
---
# **ninja costume women**
**Skip it**
High returns (19.7%) — this niche doesn't clear our bar today.
Market size 3Growth 33Conversion 1Competition 63Returns 0Price range 94Avg price 95Brand share 68Review moat 80Quality gap 70
**Avg price**
**Incredible****$29.71**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$13.87–$74.71**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Great****407.53**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Good****64%**
top-5 brand share — brands hold most of the demand
**Competition**
**Good****47%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Okay****+6.2%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$13K**
$13K/yr · 384K searches
**Conversion**
**Bad****0.1%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Bad****19.7%**
return rate — above 5% kills the launch gate
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United States niche tracking, ninja costume women is a $13K/yr Amazon United States market (384K searches/yr). The top 5 brands hold 64% of demand. Demand peaks in Sep–Oct–Nov. Verdict: Skip it — 42/100.
Data updated Jul 21, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **ninja costume women market data**
- **Units sold / yr**
- **2K–2K**
- avg 0–100/product
- **Revenue / yr**
- **$45K–$59K**
- units × avg price
- **Conversion rate**
- **0.1%**
- **Avg BSR**
- **#138,130**
- **Page quality**
- **0%**
- **Prime**
- **83%**
- **Sponsored**
- **50%**
- **Out of stock**
- **14.4%**
- **Avg brand age**
- **43 months**
- **Avg seller age**
- **183 days**
## **Competition & brand share**
The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**22 **▼falling
**Sellers**
**43**
**Top-5 brand share**
**64%**
Top 20: 98%
**Top-5 click share**
**47%**
Top 20: 83%
**Open market**
**30%**
- ST.Manrdy22% - JasmyGirls14% - Leg Avenue14% - Mingnos8% - Elibelle6% - Alrovetoney6%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +6.2% search growth over the last 90 days.
125K75KSpike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Sep, Oct, Nov · busiest ÷ quietest = 134.9×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/ninja-costume-women/trend)
## **Top ninja costume women search terms**
- **ninja costume women**168K/yr+14.8%0.2% conv. - **sexy ninja costume**11K/yr+82.5%0.1% conv. - **womens ninja costume**40K/yr-11.8%0.1% conv. - **women ninja costume**23K/yr+32.4%0.2% conv. - **sexy ninja costumes for women**35K/yr-35.1%0.2% conv. - **female ninja costume**7K/yr+54.6%0.2% conv. - **sexy ninja**5K/yr-10.0%0.0% conv. - **samurai costume women**8K/yr-25.3%0.0% conv. - **ninja women costume**10K/yr-30.3%0.0% conv. - **ninja costume for women**9K/yr+32.3%0.0% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/ninja-costume-women/search-terms)
## **Top ninja costume women 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%5%$62810%$1K15%$2K20%$3K1101001K10K 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**ST.Manrdy Rave Outfits for Women Streetwear High Split Hooded Dress Succubus Sexy Rave Swimsuit Cover UpsM Black**ST.Manrdy**$21.69**4.3★137 rev](https://www.amazon.com/dp/B0D5BMJ4D4) [2**JasmyGirls Anime Lingerie Sexy Devil Cosplay Costume Halloween Ninja Roleplay Outfit High Slit Babydoll Dress Goth Tank Dresses**JasmyGirls**$18.74**3.8★116 rev](https://www.amazon.com/dp/B0BC3FNCNX) [3**Alrovetoney Sexy Lingerie Fantasy Costume Sexy Series Printed Cut-Out Slit Womens Costume Black XL**Alrovetoney**$18.27**4.4★31 rev](https://www.amazon.com/dp/B0G3PBTMGY) [4**Mingnos Women Goth Rave Dress Sexy Cosplay Costume Cutout High Slit Sheer Festival Outfits Night Out Dresses Black L**Mingnos**$24.93**4.4★134 rev](https://www.amazon.com/dp/B0DDJBSVLW) [5**Elibelle Japanese Anime Womens Dance Robe Kimono Fancy Dress Yukata Silk Folding Fans Tabi Hairstick Socks set Black Large**Elibelle**$35.56**4.3★1,384 rev](https://www.amazon.com/dp/B09LCD58XR)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Alrovetoney Sexy Lingerie Fantasy Costume Sexy Series Printed Cut-Out Slit Womens Costume Black XL**Alrovetoney**$18.27**31 rev7mo ago](https://www.amazon.com/dp/B0G3PBTMGY) [**KORURACLUB Womens Black Lingerie Backless Bodysuit Corset Top Sexy Bodysuits Halter Neck Bodysuit Heart Cutout Corset Top (Red L/XL)**KORURACLUB**$23.50**70 rev10mo ago](https://www.amazon.com/dp/B0FRLX3SV7) [**RASHNINJA Womens Dragon Training Shirt Long Sleeve Rash Guard for BJJ MMA Grappling and Combat Fitness (US Alpha XX-Small Regular Regular V11)**RASHNINJA**$22.99**0 rev10mo ago](https://www.amazon.com/dp/B0FR4P58YT) [**Mingnos Goth Rave Dress for Women Streetwear Sexy Cosplay Festival Outfits Gothic Costume Party Hooded Dresses Black L**Mingnos**$23.80**7 rev1y ago](https://www.amazon.com/dp/B0FGQ3DWZV) [**NE Beauty Fire Fighter Costume For Women Thong and Crop Set Medium Red**NE Beauty**$25.19**11 rev1y ago](https://www.amazon.com/dp/B0FD7ZLK1Y)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**NE Beauty Fire Fighter Costume For Women Thong and Crop Set Medium Red**NE Beauty**$25.19**4.2★**▲ 1000%**](https://www.amazon.com/dp/B0FD7ZLK1Y) [**Alrovetoney Sexy Lingerie Fantasy Costume Sexy Series Printed Cut-Out Slit Womens Costume Black XL**Alrovetoney**$18.27**4.4★**▲ 1000%**](https://www.amazon.com/dp/B0G3PBTMGY) [**RASHNINJA Womens Dragon Training Shirt Long Sleeve Rash Guard for BJJ MMA Grappling and Combat Fitness (US Alpha XX-Small Regular Regular V11)**RASHNINJA**$22.99**0.0★**▲ 1000%**](https://www.amazon.com/dp/B0FR4P58YT) [**KORURACLUB Womens Black Lingerie Backless Bodysuit Corset Top Sexy Bodysuits Halter Neck Bodysuit Heart Cutout Corset Top (Red L/XL)**KORURACLUB**$23.50**4.3★**▲ 1000%**](https://www.amazon.com/dp/B0FRLX3SV7) [**RASHNINJA Samurai Womens Short Sleeve Rash Guard Compression Shirt MMA BJJ Grappling Jiu Jitsu (US Alpha XX-Small Regular Regular S15)**RASHNINJA**$20.65**4.3★**▲ 1000%**](https://www.amazon.com/dp/B0DKDZ32QX)
**~~View all trending →~~**
## **What buyers say about ninja costume women**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**32%
*“Fit great”*
**Comfort-Overall**19%
*“Very comfortable”*
**Stretchability/Expandability/Elasticity**6%
*“stretch was nice”*
**Quality-Overall**5%
*“Excellent product”*
**Value For Money**5%
*“Good for price”*
**Soft Feel**4%
*“It was soft and comfortable”*
**Material Quality**4%
*“Love the material”*
**Weight Light**3%
*“lightweight”*
**Design-Overall**2%
*“Pretty cute piece, decent construction”*
**Transparency**2%
*“Semi transparent, light, breathable, Absolutely loved it”*
### **What buyers complain about **
**Transparency**19%
*“Very see thru”*
**Length**13%
*“Way to long if your short”*
**Stitch/Finish/Polish**13%
*“it came with a huge rip down one of the side seams”*
**Material Quality**6%
*“cheap feeling material”*
**Flexibility**6%
*“It runs up in the back when bending over”*
**Strength**6%
*“Panties are a bit flimsy”*
**Size-Overall**4%
*“fit wise, the cut just didnt work for me”*
**Shape/Style**4%
*“fit wise, the cut just didnt work for me”*
**Thickness**3%
*“thin for sure”*
**Quality-Overall**3%
*“Kinda cheap quality though”*
### **Top return reasons **
**Size-Overall**48%
**Length**9%
**Chest Fit**8%
**Material Quality**5%
**Advertised Vs Actual Product**4%
**Waist Fit**3%
**Thin**3%
**Quality-Overall**2%
**Shoulder Fit**2%
**Shape/Style**2%
## **Common questions**
- **Is ninja costume women profitable to sell on Amazon United States?**
- The niche generates $13K/yr across 36 tracked products. 0 of 5 products launched in the last 360 days are still selling. 90-day search growth is +6.2%. Flapen's verdict: Skip it (42/100).
- **How competitive is the ninja costume women niche?**
- 22 brands and 43 sellers compete. The top 5 products take 47% of clicks and top 5 brands hold 64% of demand.
- **What do buyers complain about in ninja costume women?**
- Top complaints mined from reviews: Transparency, Length, Stitch/Finish/Polish. The return rate is 19.7% — above our launch gate.
- **When does demand for ninja costume women peak?**
- Demand peaks in Sep–Oct–Nov; the busiest month runs 134.9× the quietest.
- **What does it cost to enter the ninja costume women niche?**
- Listings span $13.87–$74.71; the average listing price is $29.71 (sweet spot $15–$100). The average incumbent carries 408 reviews — the moat a new listing must climb.
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