Is costumes for girls profitable to sell on Amazon United States?

The niche generates $12K/yr across 23 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is -21.9%. Flapen's verdict: Skip it (35/100).

How competitive is the costumes for girls niche?

19 brands and 54 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 60% of demand.

What do buyers complain about in costumes for girls?

Top complaints mined from reviews: Quality-Overall, Durability, Size-Overall. The return rate is 5.3% — above our launch gate.

When does demand for costumes for girls peak?

Demand peaks in Sep–Oct; the busiest month runs 199.8× the quietest.

What does it cost to enter the costumes for girls niche?

Listings span $6.54–$46.04; the average listing price is $27.77 (sweet spot $15–$100). The average incumbent carries 721 reviews — the moat a new listing must climb.

costumes for girls

Skip it

Weak search conversion (0.0%) — this niche doesn't clear our bar today.

Avg price

Incredible$27.77

avg listing price — sweet spot $15–$100

Price range

Great$6.54–$46.04

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

Brand share

Good60%

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

Review moat

Good720.78

avg incumbent reviews — the moat a new listing must climb

Competition

Okay55%

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

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Returns

Bad5.3%

return rate — above 5% kills the launch gate

Growth

Bad-21.9%

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

Market size

Bad$12K

$12K/yr · 1.0M searches

Conversion

Bad0.0%

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

Signals High Returns

According to Flapen's Amazon United States niche tracking, costumes for girls is a $12K/yr Amazon United States market (1.0M searches/yr). The top 5 brands hold 60% of demand. Demand peaks in Sep–Oct. Verdict: Skip it — 35/100.

Data updated Jul 10, 2026 · scored weekly · How we score niches

costumes for girls market data

Units sold / yr: 3K–4K; avg 0–100/product
Revenue / yr: $83K–$111K; units × avg price
Conversion rate: 0.0%
Avg BSR: #2,263
Page quality: 0%
Prime: 96%
Sponsored: 83%
Out of stock: 17.1%
Avg brand age: 34 months
Avg seller age: 175 days

Competition & brand share

The top 5 products take 55% of clicks — established leaders, but buyers still shop beyond them.

Brands

19 falling

Sellers

Top-5 brand share

60%

Top 20: 100%

Top-5 click share

55%

Top 20: 95%

Open market

35%

Elibelle35%
mcuaeddu9%
FFNXKLDZSW6%
DSplay5%
Joyxiam5%
NXXBLLLY5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -21.9% search growth over the last 90 days.

Peak months: Sep, Oct · busiest ÷ quietest = 199.8×

Open Trend

Top costumes for girls search terms

halloween costumes for girls 10-12184K/yr +59.1%0.0% conv.
costumes for girls 10-12106K/yr -35.3%0.1% conv.
girls costumes 10-1282K/yr -62.3%0.0% conv.
cute costumes for girls31K/yr -18.8%0.0% conv.
cute halloween costumes for girls 10-1226K/yr +73.9%0.0% conv.
halloween costumes for girls 12-1455K/yr +140.3%0.0% conv.
halloween costumes for 11 year old girls28K/yr +84.3%0.0% conv.
girl costumes 7-830K/yr -45.3%0.0% conv.
costume for girls 10-1233K/yr -49.1%0.0% conv.
girl costumes 10-1242K/yr -64.6%0.0% conv.

All search terms

Top costumes for girls 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★)

All 23 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Japanese Traditional Dress Kimono Robe for Kids Girls Costume Silk Folding Fans hairstick Fox mask Set(red Back 150cm)

Elibelle$36.804.8★299 rev

mcuaeddu Demogorgon Onesie Halloween Costume Costume Warm Long Sleeve Costume (10-12 Years)

mcuaeddu$36.834.6★169 rev

Kids Girl Pirate Halloween Cosplay Costume (10-12Y)

DSplay$46.044.2★303 rev

Joyxiam Kids Onesie One-Piece Pajamas Girl Halloween Costumes(10-12Years)

Joyxiam$25.324.6★504 rev

NXXBLLLY Kids Onesie Animal Pajamas Halloween Costumes Christmas Cosplay Costumes for Girl(10-12 Years)

NXXBLLLY$20.684.6★162 rev

Newest

by launch date

SEHIOZNI Kids Funny Green Monster Onesie Silly Big Mouth Monster Cartoon Soft Plush One Piece (Purple 10-13 Years)

SEHIOZNI$24.0214 rev

1mo ago

mcuaeddu Demogorgon Onesie Halloween Costume Costume Warm Long Sleeve Costume (12-14 Years)

mcuaeddu$35.53169 rev

3mo ago

mcuaeddu Demogorgon Onesie Halloween Costume Costume Warm Long Sleeve Costume (10-12 Years)

mcuaeddu$36.83169 rev

5mo ago

Rarjuiey Halloween Toddler Girl Outfit Boo Romper Spaghetti Strap Ghost Jumpsuit Bell Bottoms Outfits Spooky Clothes (Boo Ghost Black 4-5T)

Rarjuiey$14.65141 rev

1y ago

AstraPrime Unisex Kids Onesie Flannel Cosplay Costume Halloween Onesie Pajamas Home Clothing(8-10Years)

AstraPrime$21.17144 rev

1y ago

What buyers say about costumes for girls

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

What buyers love

Size-Overall22%

“fit as expected”

Fun/Entertainment Experience18%

“The kids are enjoying them”

Gifting Purpose10%

“Christmas gift for my grandson”

Quality-Overall9%

“Good quality”

Comfort-Overall8%

“Very comfy”

Value For Money6%

“Great value for the price”

Color5%

“Fun colors”

Brightness/Shine/Glow4%

“The lights are very bright and colorful”

Battery Inclusion3%

“Batteries are included”

Durability3%

“Durable and comfortable”

What buyers complain about

Quality-Overall17%

“Couldve been better constructed basically just very cheap gloves with electronics inside it to flash”

Durability16%

“Broke Immediately”

Size-Overall11%

“Not true to size”

Material Quality8%

“Cheap material”

Smell6%

“Battery make it smelly”

Zipper Quality6%

“the zipper broke on it within a few uses”

Strap/String Quality6%

“Couldnt give it a five because the shoulder strap was not as adjustable enough to have it fit”

Color6%

“it's more of a pale purple not blue like the character”

Grip3%

“The fingers kept going out”

Product Condition3%

“Item arrived used”

Top return reasons

Size-Overall55%

Functionality-Overall5%

Length5%

Zipper Quality5%

Advertised Vs Actual Product4%

Quality-Overall4%

Material Quality2%

Defective Material/Parts2%

Thigh Fit2%

Sleeve Fit1%

Common questions

Is costumes for girls profitable to sell on Amazon United States?: The niche generates $12K/yr across 23 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is -21.9%. Flapen's verdict: Skip it (35/100).
How competitive is the costumes for girls niche?: 19 brands and 54 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 60% of demand.
What do buyers complain about in costumes for girls?: Top complaints mined from reviews: Quality-Overall, Durability, Size-Overall. The return rate is 5.3% — above our launch gate.
When does demand for costumes for girls peak?: Demand peaks in Sep–Oct; the busiest month runs 199.8× the quietest.
What does it cost to enter the costumes for girls niche?: Listings span $6.54–$46.04; the average listing price is $27.77 (sweet spot $15–$100). The average incumbent carries 721 reviews — the moat a new listing must climb.