Is monster high costume profitable to sell on Amazon United States?

The niche generates $10K/yr across 59 tracked products. 4 of 29 products launched in the last 360 days are still selling. 90-day search growth is +30.7%. Flapen's verdict: Skip it (48/100).

How competitive is the monster high costume niche?

27 brands and 44 sellers compete. The top 5 products take 30% of clicks and top 5 brands hold 50% of demand.

What do buyers complain about in monster high costume?

Top complaints mined from reviews: Size-Overall, Quality-Overall, Value For Money. The return rate is 7.0% — above our launch gate.

What does it cost to enter the monster high costume niche?

Listings span $10.77–$121.10; the average listing price is $35.77 (sweet spot $15–$100). The average incumbent carries 2,171 reviews — the moat a new listing must climb.

Monster High Costume

Skip it

Weak search conversion (0.1%) — this niche doesn't clear our bar today.

Avg price

Incredible$35.77

avg listing price — sweet spot $15–$100

Competition

Great30%

top-5 click share — an open shelf

Brand share

Great50%

top-5 brand share — no brand owns this niche

Price range

Great$10.77–$121.10

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

Growth

Good+30.7%

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

Quality gap

Good4.5★

avg incumbent rating — lower means beatable quality

Review moat

Okay2,171.14

avg incumbent reviews — the moat a new listing must climb

Returns

Bad7.0%

return rate — above 5% kills the launch gate

Market size

Bad$10K

$10K/yr · 577K searches

Conversion

Bad0.1%

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

Signals Low Review Barrier High Returns

Is monster high costume profitable on Amazon?

According to Flapen's Amazon United States niche tracking, monster high costume is a $10K/yr Amazon United States market (577K searches/yr). The top 5 brands hold 50% of demand. Verdict: Skip it — 48/100.

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

monster high costume market size & sales

Units sold, revenue, conversion and listing quality across the tracked shelf.

Units sold / yr: 500–750; avg 0–100/product
Revenue / yr: $18K–$27K; units × avg price
Conversion rate: 0.1%
Avg BSR: #13,736
Page quality: 0%
Prime: 76%
Sponsored: 63%
Out of stock: 14.9%
Avg brand age: 39 months
Avg seller age: 145 days

Competition: brands, sellers & click share

Clicks spread well past the top 5 (30% combined) — an open shelf where new products get seen.

Brands

27 rising

Sellers

Top-5 brand share

50%

Top 20: 93%

Top-5 click share

30%

Top 20: 67%

Open market

44%

Monster High21%
Kidukso8%
HSCTEK8%
MEOWCOS.COM7%
Spirit Halloween6%
AOLBSPD6%

monster high costume demand & seasonality

Weekly Amazon search volume, last 36 weeks — +30.7% search growth over the last 90 days.

Open Trend

Top monster high costume search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

monster high costume322K/yr +35.2%0.1% conv.
monster high cosplay27K/yr +28.6%0.1% conv.
monster high costumes28K/yr +34.8%0.0% conv.
monster high costume adult78K/yr -5.5%0.1% conv.
monster high costume kids31K/yr -22.4%0.3% conv.
monster high halloween costume13K/yr +68.6%0.0% conv.
monster high costume women22K/yr +90.6%0.0% conv.
monster high costumes for girls9K/yr +78.4%0.2% conv.
monster high adult costume9K/yr +12.0%0.0% conv.
monster high costumes for women5K/yr +77.1%0.0% conv.

All search terms

Top monster high costume products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

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

Top sellers

by 90-day click share

Kidukso Cool Anime Runa Cosplay Costume Women Orange Hoodie with Long Bunny Ears Halloween Role Playing Hooded Zipper Jacket Coat Orange XL

Kidukso$20.114.2★41 rev

Monster High Little Girls Dress Plaid Purple 7-8

Monster High$24.934.8★91 rev

ABAFIP Women Cute Kawaii Anime Lingerie set Halter Strap Micro Bra Tiny Panty Garter Belt Striped Stockings 4Pcs Underwear Pink One Size

ABAFIP$17.223.8★877 rev

AOLBSPD Big Mouth Monster Onesie Silly Monster Onesie Plush Cosplay Onesie Pajamas Cozy Home Soft Plush Costume(No Shoes Included)-L Green

AOLBSPD$40.054.2★44 rev

Newcotte 5 Pcs Halloween Girl Costume Set for Women Include Black and White Wig Adjustable Necktie Belt High Knee High Socks Fingerless Gloves for Adult Halloween Cosplay Party

Newcotte$31.494.2★9 rev

Newest

by launch date

AOLBSPD Big Mouth Monster Onesie Silly Monster Onesie Plush Cosplay Onesie Pajamas Cozy Home Soft Plush Costume(No Shoes Included)-L Green

AOLBSPD$40.0544 rev

3mo ago

MEOWCOS Womens Gothic Punk Corset Top and Skirt Set Blue Black Plaid Goth Halloween Costume with Gloves and Tie

MEOWCOS.COM$47.921 rev

8mo ago

MESU Women Striped Thigh High Socks and Fingerless Gloves Set for Cosplay Costumen Black Purple

MESU$13.6217 rev

8mo ago

Monster High Little Girls T-Shirt and French Terry Dolphin Shorts Outfit Set Plaid Navy/Lavender 6

Monster High$19.648 rev

10mo ago

Monster High Little Girls Tutu Pleated Tulle Dress Logo Fuchsia/Black 7-8

Monster High$20.292 rev

10mo ago

What reviews say buyers love and hate about monster high costume

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

What buyers love

Size-Overall15%

“The fit was comfortable”

Quality-Overall15%

“Great quality”

Comfort-Overall13%

“They are very comfortable”

Advertised Vs Actual Product9%

“It looks exactly like the picture”

Color9%

“The colors are bright”

Soft Feel5%

“The material is soft and cozy, making it comfortable to wear for costume parties, lounging around the house, or themed events”

Gifting Purpose4%

“Great gift”

Value For Money3%

“Worth the price”

Allergies3%

“The lace is pretty and not itchy”

Warmth2%

“The plush material makes it incredibly warm home loungewear”

What buyers complain about

Size-Overall23%

“if you aren't the size of a 12 year old this probably won't fit”

Quality-Overall11%

“Horrible quality”

Value For Money6%

“insane pull at that price”

Advertised Vs Actual Product5%

“However the seller provides very misleading tracking information”

Thigh Fit5%

“i could not get the belt past my thighs without busting the seams”

Hard Feel5%

“there not as soft or thick as I would like for the price”

Shoulder Fit5%

“The shoulders are too narrow”

Stretchability/Expandability/Elasticity3%

“No stretch, except for slight at the sleeve cuff”

Thickness2%

“The material is a thick”

Pockets/Compartments2%

“sadly no pockets”

Top return reasons

Size-Overall43%

Sleeve Fit7%

Neck Fit7%

Length5%

Material Quality5%

Advertised Vs Actual Product4%

Arm Fit4%

Shoulder Fit3%

Color3%

Wig/Artificial Hair Quality2%

Common monster high costume questions

Is monster high costume profitable to sell on Amazon United States?: The niche generates $10K/yr across 59 tracked products. 4 of 29 products launched in the last 360 days are still selling. 90-day search growth is +30.7%. Flapen's verdict: Skip it (48/100).
How competitive is the monster high costume niche?: 27 brands and 44 sellers compete. The top 5 products take 30% of clicks and top 5 brands hold 50% of demand.
What do buyers complain about in monster high costume?: Top complaints mined from reviews: Size-Overall, Quality-Overall, Value For Money. The return rate is 7.0% — above our launch gate.
What does it cost to enter the monster high costume niche?: Listings span $10.77–$121.10; the average listing price is $35.77 (sweet spot $15–$100). The average incumbent carries 2,171 reviews — the moat a new listing must climb.