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.

ninja costume women

Skip it

High returns (19.7%) — this niche doesn't clear our bar today.

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

Great407.53

avg incumbent reviews — the moat a new listing must climb

Quality gap

Good4.3★

avg incumbent rating — lower means beatable quality

Brand share

Good64%

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

Competition

Good47%

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

Bad0.1%

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

Returns

Bad19.7%

return rate — above 5% kills the launch gate

Signals Low Review Barrier High Returns

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

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

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.

Peak months: Sep, Oct, Nov · busiest ÷ quietest = 134.9×

Open Trend

Top ninja costume women search terms

ninja costume women168K/yr +14.8%0.2% conv.
sexy ninja costume11K/yr +82.5%0.1% conv.
womens ninja costume40K/yr -11.8%0.1% conv.
women ninja costume23K/yr +32.4%0.2% conv.
sexy ninja costumes for women35K/yr -35.1%0.2% conv.
female ninja costume7K/yr +54.6%0.2% conv.
sexy ninja5K/yr -10.0%0.0% conv.
samurai costume women8K/yr -25.3%0.0% conv.
ninja women costume10K/yr -30.3%0.0% conv.
ninja costume for women9K/yr +32.3%0.0% conv.

All 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.

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

ST.Manrdy Rave Outfits for Women Streetwear High Split Hooded Dress Succubus Sexy Rave Swimsuit Cover UpsM Black

ST.Manrdy$21.694.3★137 rev

JasmyGirls Anime Lingerie Sexy Devil Cosplay Costume Halloween Ninja Roleplay Outfit High Slit Babydoll Dress Goth Tank Dresses

JasmyGirls$18.743.8★116 rev

Alrovetoney Sexy Lingerie Fantasy Costume Sexy Series Printed Cut-Out Slit Womens Costume Black XL

Alrovetoney$18.274.4★31 rev

Mingnos Women Goth Rave Dress Sexy Cosplay Costume Cutout High Slit Sheer Festival Outfits Night Out Dresses Black L

Mingnos$24.934.4★134 rev

Elibelle Japanese Anime Womens Dance Robe Kimono Fancy Dress Yukata Silk Folding Fans Tabi Hairstick Socks set Black Large

Elibelle$35.564.3★1,384 rev

Newest

by launch date

Alrovetoney Sexy Lingerie Fantasy Costume Sexy Series Printed Cut-Out Slit Womens Costume Black XL

Alrovetoney$18.2731 rev

7mo ago

KORURACLUB Womens Black Lingerie Backless Bodysuit Corset Top Sexy Bodysuits Halter Neck Bodysuit Heart Cutout Corset Top (Red L/XL)

KORURACLUB$23.5070 rev

10mo ago

RASHNINJA Womens Dragon Training Shirt Long Sleeve Rash Guard for BJJ MMA Grappling and Combat Fitness (US Alpha XX-Small Regular Regular V11)

RASHNINJA$22.990 rev

10mo ago

Mingnos Goth Rave Dress for Women Streetwear Sexy Cosplay Festival Outfits Gothic Costume Party Hooded Dresses Black L

Mingnos$23.807 rev

1y ago

NE Beauty Fire Fighter Costume For Women Thong and Crop Set Medium Red

NE Beauty$25.1911 rev

1y ago

What buyers say about ninja costume women

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

What buyers love

Size-Overall32%

“Fit great”

Comfort-Overall19%

“Very comfortable”

Stretchability/Expandability/Elasticity6%

“stretch was nice”

Quality-Overall5%

“Excellent product”

Value For Money5%

“Good for price”

Soft Feel4%

“It was soft and comfortable”

Material Quality4%

“Love the material”

Weight Light3%

“lightweight”

Design-Overall2%

“Pretty cute piece, decent construction”

Transparency2%

“Semi transparent, light, breathable, Absolutely loved it”

What buyers complain about

Transparency19%

“Very see thru”

Length13%

“Way to long if your short”

Stitch/Finish/Polish13%

“it came with a huge rip down one of the side seams”

Material Quality6%

“cheap feeling material”

Flexibility6%

“It runs up in the back when bending over”

Strength6%

“Panties are a bit flimsy”

Size-Overall4%

“fit wise, the cut just didnt work for me”

Shape/Style4%

“fit wise, the cut just didnt work for me”

Thickness3%

“thin for sure”

Quality-Overall3%

“Kinda cheap quality though”

Top return reasons

Size-Overall48%

Length9%

Chest Fit8%

Material Quality5%

Advertised Vs Actual Product4%

Waist Fit3%

Thin3%

Quality-Overall2%

Shoulder Fit2%

Shape/Style2%

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.