---
title: "Monster High Costume — $860/mo Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/monster-high-costume"
last_updated: "2026-08-12T06:27:22.403Z"
locale: en
meta:
description: "Amazon product research for monster high costume: $860/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for monster high costume: $860/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Monster High Costume — $860/mo Amazon US Product Research"
---
# **Monster High Costume**
**Skip it**
Weak search conversion (0.1%) — this niche doesn't clear our bar today.
Market size 3Growth 57Conversion 1Competition 85Returns 18Price range 77Avg price 95Brand share 85Review moat 43Quality gap 50
**Avg price**
**Incredible****$35.77**
avg listing price — sweet spot $15–$100
**Competition**
**Great****30%**
top-5 click share — an open shelf
**Brand share**
**Great****50%**
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**
**Good****4.5★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****2,171.14**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Bad****7.0%**
return rate — above 5% kills the launch gate
**Market size**
**Bad****$10K**
$10K/yr · 577K searches
**Conversion**
**Bad****0.1%**
search→purchase rate — share of searches ending in a sale
**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%")
## **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 ~~](https://flapen.com/research/methodology)
## **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**
**44**
**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.
45K35KSpike '26Nov '25Dec '25Jan '26Mar '26Apr '26May '26
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/monster-high-costume/trend)
## **Top monster high costume search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **monster high costume**322K/yr+35.2%0.1% conv. - **monster high cosplay**27K/yr+28.6%0.1% conv. - **monster high costumes**28K/yr+34.8%0.0% conv. - **monster high costume adult**78K/yr-5.5%0.1% conv. - **monster high costume kids**31K/yr-22.4%0.3% conv. - **monster high halloween costume**13K/yr+68.6%0.0% conv. - **monster high costume women**22K/yr+90.6%0.0% conv. - **monster high costumes for girls**9K/yr+78.4%0.2% conv. - **monster high adult costume**9K/yr+12.0%0.0% conv. - **monster high costumes for women**5K/yr+77.1%0.0% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/monster-high-costume/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.
0%2%$2064%$4136%$6198%$8251101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
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
[1**Kidukso Cool Anime Runa Cosplay Costume Women Orange Hoodie with Long Bunny Ears Halloween Role Playing Hooded Zipper Jacket Coat Orange XL**Kidukso**$20.11**4.2★41 rev](https://www.amazon.com/dp/B0DG5LJPKV) [2**Monster High Little Girls Dress Plaid Purple 7-8**Monster High**$24.93**4.8★91 rev](https://www.amazon.com/dp/B0DW18Q9M8) [3**ABAFIP Women Cute Kawaii Anime Lingerie set Halter Strap Micro Bra Tiny Panty Garter Belt Striped Stockings 4Pcs Underwear Pink One Size**ABAFIP**$17.22**3.8★877 rev](https://www.amazon.com/dp/B09PHP1VT3) [4**AOLBSPD Big Mouth Monster Onesie Silly Monster Onesie Plush Cosplay Onesie Pajamas Cozy Home Soft Plush Costume(No Shoes Included)-L Green**AOLBSPD**$40.05**4.2★44 rev](https://www.amazon.com/dp/B0GTKTPPDP) [5**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**$31.49**4.2★9 rev](https://www.amazon.com/dp/B0FJ8WLL41)
**~~View all top sellers →~~**
### **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**$40.05**44 rev3mo ago](https://www.amazon.com/dp/B0GTKTPPDP) [**MEOWCOS Womens Gothic Punk Corset Top and Skirt Set Blue Black Plaid Goth Halloween Costume with Gloves and Tie**MEOWCOS.COM**$47.92**1 rev8mo ago](https://www.amazon.com/dp/B0FX7WHC2Q) [**MESU Women Striped Thigh High Socks and Fingerless Gloves Set for Cosplay Costumen Black Purple**MESU**$13.62**17 rev8mo ago](https://www.amazon.com/dp/B0FX2QQVSZ) [**Monster High Little Girls T-Shirt and French Terry Dolphin Shorts Outfit Set Plaid Navy/Lavender 6**Monster High**$19.64**8 rev10mo ago](https://www.amazon.com/dp/B0FQ7VXKN4) [**Monster High Little Girls Tutu Pleated Tulle Dress Logo Fuchsia/Black 7-8**Monster High**$20.29**2 rev10mo ago](https://www.amazon.com/dp/B0FQ9J4MP4)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Monster Onesie Costume Kids Animal Pajamas Cosplay Blanket Clothes Teen 16**HSCTEK**$25.56**4.6★**▲ 306%**](https://www.amazon.com/dp/B0FNWS2MK4) [**Monster High Little Girls Tutu Pleated Tulle Dress Logo Fuchsia/Black 7-8**Monster High**$20.29**5.0★**▲ 304%**](https://www.amazon.com/dp/B0FQ9J4MP4) [**HSCTEK Monster Onesie Costume Adult Women Men Pjs Cosplay Blanket Halloween S**HSCTEK**$34.45**4.6★**▲ 303%**](https://www.amazon.com/dp/B0FNWHL6PK) [**Monster High Big Girls Tutu Pleated Tulle Dress Logo Fuchsia/Black 10-12**Monster High**$20.14**5.0★**▲ 303%**](https://www.amazon.com/dp/B0FQ98P18V) [**MESU Women Striped Thigh High Socks and Fingerless Gloves Set for Cosplay Costumen Black Purple**MESU**$13.62**4.8★**▲ 303%**](https://www.amazon.com/dp/B0FX2QQVSZ)
**~~View all trending →~~**
## **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-Overall**15%
*“The fit was comfortable”*
**Quality-Overall**15%
*“Great quality”*
**Comfort-Overall**13%
*“They are very comfortable”*
**Advertised Vs Actual Product**9%
*“It looks exactly like the picture”*
**Color**9%
*“The colors are bright”*
**Soft Feel**5%
*“The material is soft and cozy, making it comfortable to wear for costume parties, lounging around the house, or themed events”*
**Gifting Purpose**4%
*“Great gift”*
**Value For Money**3%
*“Worth the price”*
**Allergies**3%
*“The lace is pretty and not itchy”*
**Warmth**2%
*“The plush material makes it incredibly warm home loungewear”*
### **What buyers complain about **
**Size-Overall**23%
*“if you aren't the size of a 12 year old this probably won't fit”*
**Quality-Overall**11%
*“Horrible quality”*
**Value For Money**6%
*“insane pull at that price”*
**Advertised Vs Actual Product**5%
*“However the seller provides very misleading tracking information”*
**Thigh Fit**5%
*“i could not get the belt past my thighs without busting the seams”*
**Hard Feel**5%
*“there not as soft or thick as I would like for the price”*
**Shoulder Fit**5%
*“The shoulders are too narrow”*
**Stretchability/Expandability/Elasticity**3%
*“No stretch, except for slight at the sleeve cuff”*
**Thickness**2%
*“The material is a thick”*
**Pockets/Compartments**2%
*“sadly no pockets”*
### **Top return reasons **
**Size-Overall**43%
**Sleeve Fit**7%
**Neck Fit**7%
**Length**5%
**Material Quality**5%
**Advertised Vs Actual Product**4%
**Arm Fit**4%
**Shoulder Fit**3%
**Color**3%
**Wig/Artificial Hair Quality**2%
## **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.
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