---
title: "Grinch Costume Adult — $94K/mo Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/grinch-costume-adult"
last_updated: "2026-08-12T22:39:15.754Z"
locale: en
meta:
description: "Amazon product research for grinch costume adult: $94K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for grinch costume adult: $94K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Grinch Costume Adult — $94K/mo Amazon US Product Research"
---
# **Grinch Costume Adult**
**Skip it**
Soft demand (-31.6% this quarter) — this niche doesn't clear our bar today.
Market size 80Growth 9Conversion 10Competition 33Returns 15Price range 69Avg price 95Brand share 59Review moat 91Quality gap 78
**Avg price**
**Incredible****$43.14**
avg listing price — sweet spot $15–$100
**Review moat**
**Great****180.91**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Great****$1.1M**
$1.1M/yr · 3.4M searches
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Price range**
**Good****$16.51–$137.41**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Good****70%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****65%**
top-5 click share — leaders hold, buyers still browse
**Returns**
**Bad****7.7%**
return rate — above 5% kills the launch gate
**Conversion**
**Bad****0.8%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Bad****-31.6%**
90-day search growth — must beat 0% to launch
**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 grinch costume adult profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, grinch costume adult is a $1.1M/yr Amazon United States market (3.4M searches/yr). The top 5 brands hold 70% of demand. Demand peaks in Nov–Dec. Verdict: Skip it — 47/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **grinch costume adult market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **25K–30K**
- avg 500–750/product
- **Revenue / yr**
- **$1.1M–$1.3M**
- units × avg price
- **Conversion rate**
- **0.8%**
- **Avg BSR**
- **#42,588**
- **Page quality**
- **0%**
- **Prime**
- **86%**
- **Sponsored**
- **59%**
- **Out of stock**
- **17.9%**
- **Avg brand age**
- **37 months**
- **Avg seller age**
- **167 days**
## **Competition: brands, sellers & click share**
The top 5 products take 65% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**20 **▼falling
**Sellers**
**20**
**Top-5 brand share**
**70%**
Top 20: 100%
**Top-5 click share**
**65%**
Top 20: 97%
**Open market**
**26%**
- Fun Costumes26% - ELOOGOOKIN23% - ATESMO11% - Adrinfly5% - Beita4% - WPOZD4%
## **grinch costume adult demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -31.6% search growth over the last 90 days.
500K300KSpike '24Holiday '24Spike '25Prime Day '25Holiday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Nov, Dec · busiest ÷ quietest = 176.9×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/grinch-costume-adult/trend)
## **Top grinch costume adult search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **grinch costume**1.7M/yr-21.2%0.4% conv. - **grinch costume adult**968K/yr-55.5%0.7% conv. - **the grinch costume**192K/yr-31.0%0.1% conv. - **grinch outfit**146K/yr-27.2%0.1% conv. - **adult grinch costume**57K/yr-21.4%0.0% conv. - **grinch costume women**26K/yr+8.5%0.0% conv. - **green monster costume**7K/yr+11.6%0.0% conv. - **grinch costume men**12K/yr-18.0%0.3% conv. - **grinch suit**50K/yr-22.9%0.6% conv. - **grinch costumes**27K/yr-8.6%0.2% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/grinch-costume-adult/search-terms)
## **Top grinch costume adult 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%10%$113K20%$226K30%$339K40%$452K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 22 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**ELOOGOOKIN Adults Green Monster Onesie Fancy Furry Santa Jumpsuit Christmas Halloween Cosplay Dress Up Costume for Men Women (Green M)**ELOOGOOKIN**$37.96**3.5★4 rev](https://www.amazon.com/dp/B0FX2ZLT1K) [2**Dr. Seuss The Grinch Premium Costume Adult X-Large**Fun Costumes**$137.41**4.5★21 rev](https://www.amazon.com/dp/B09R4YTWHZ) [3**9PCS Christmas Green Monster Costume for Men Adult Santa Costume with Mask Coat Belt Gloves Pants Socks**ATESMO**$52.16**3.5★26 rev](https://www.amazon.com/dp/B0DK35TSSH) [4**Beita Christmas Deluxe Latex Green Full Head Stole Christmas (Mask-B)**Beita**$24.69**3.9★65 rev](https://www.amazon.com/dp/B0FK4LJ5WB) [5**WPOZD Deluxe Christmas Mask with Santa Hat Green Plush Fur Holiday Costume Accessory (Green Mask and Gloves)**WPOZD**$34.07**4.0★12 rev](https://www.amazon.com/dp/B0FYG577TG)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**WPOZD Deluxe Christmas Mask with Santa Hat Green Plush Fur Holiday Costume Accessory (Green Mask and Gloves)**WPOZD**$34.07**12 rev8mo ago](https://www.amazon.com/dp/B0FYG577TG) [**ELOOGOOKIN Adults Green Monster Onesie Fancy Furry Santa Jumpsuit Christmas Halloween Cosplay Dress Up Costume for Men Women (Green M)**ELOOGOOKIN**$37.96**4 rev8mo ago](https://www.amazon.com/dp/B0FX2ZLT1K) [**Adrinfly Christmas Green Big Monster Santa Suit for Adult Deluxe 7 pcs Santa Costume Outerwear With Mask XXL**Adrinfly**$35.59**5 rev9mo ago](https://www.amazon.com/dp/B0FRLV9MFF) [**Fun Costumes Adult Grinch Costume Jumpsuit | Attached Hood has Embroidered Face | Christmas Holiday Outfit for Men and Women Medium**Fun Costumes**$49.25**10 rev10mo ago](https://www.amazon.com/dp/B0FNQB4VH9) [**The Grinch One Piece Pajamas for Women Teens S-XL Fleece Jumpsuit With Santa Hat Zip Up Hooded Jump Suit for Teens Adults (L Green Adults)**The Grinch**$50.77**76 rev11mo ago](https://www.amazon.com/dp/B0F7RSLCVJ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**ELOOGOOKIN Adults Green Monster Onesie Fancy Furry Santa Jumpsuit Christmas Halloween Cosplay Dress Up Costume for Men Women (Green M)**ELOOGOOKIN**$37.96**3.5★**▲ 1000%**](https://www.amazon.com/dp/B0FX2ZLT1K) [**The Grinch One Piece Pajamas for Women Teens S-XL Fleece Jumpsuit With Santa Hat Zip Up Hooded Jump Suit for Teens Adults (L Green Adults)**The Grinch**$50.77**4.8★**▲ 972%**](https://www.amazon.com/dp/B0F7RSLCVJ) [**Dr. Seuss The Grinch Premium Costume Adult X-Large**Fun Costumes**$137.41**4.5★**▲ 915%**](https://www.amazon.com/dp/B09R4YTWHZ) [**Frojuly Christmas Costume for Men Adult Green Furry Monster 8PCS Deluxe Santa Suit Set Xmas Cosplay Outfit Halloween M**Frojuly**$40.16**4.6★**▲ 795%**](https://www.amazon.com/dp/B0B5SL8XG8) [**Fun Costumes Adult Grinch Costume Jumpsuit | Attached Hood has Embroidered Face | Christmas Holiday Outfit for Men and Women Medium**Fun Costumes**$49.25**4.9★**▲ 749%**](https://www.amazon.com/dp/B0FNQB4VH9)
**~~View all trending →~~**
## **What reviews say buyers love and hate about grinch costume adult**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**20%
*“Its adorable and affordable”*
**Quality-Overall**19%
*“This seems to be a quality made mask”*
**Fun/Entertainment Experience**16%
*“Great fun”*
**Size-Overall**13%
*“It fit perfectly”*
**Advertised Vs Actual Product**9%
*“Exactly as described”*
**Material Quality**6%
*“The green PJ -like pants were made of polyester, were lightweight, and were very comfy and warm”*
**Ease Of Use**5%
*“Easy to put on”*
**Product Condition**2%
*“Washed and dried and still looks new”*
**Soft Feel**2%
*“Soft, warm, and quality great”*
**Washability**2%
*“Great looking and still looks new after washing”*
### **What buyers complain about **
**Size-Overall**28%
*“It does not fit correctly”*
**Color**17%
*“also the color is off”*
**Value For Money**13%
*“not worth the price if youre just needing a mask”*
**Quality-Overall**13%
*“Poor quality”*
**Comfort-Overall**8%
*“Uncomfortable to wear”*
**Advertised Vs Actual Product**4%
*“Costly and did not resemble picture shown”*
**Functionality-Overall**4%
*“It sheds a lot which is my biggest issue with it”*
### **Top return reasons **
**Size-Overall**58%
**Advertised Vs Actual Product**8%
**Quality-Overall**5%
**Value For Money**3%
**Material Quality**3%
**Length**3%
**Color**3%
**Thigh Fit**3%
**Defective Material/Parts**3%
**Comfort-Overall**2%
## **Common grinch costume adult questions**
- **Is grinch costume adult profitable to sell on Amazon United States?**
- The niche generates $1.1M/yr across 22 tracked products. 0 of 6 products launched in the last 360 days are still selling. 90-day search growth is -31.6%. Flapen's verdict: Skip it (47/100).
- **How competitive is the grinch costume adult niche?**
- 20 brands and 20 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 70% of demand.
- **What do buyers complain about in grinch costume adult?**
- Top complaints mined from reviews: Size-Overall, Color, Value For Money. The return rate is 7.7% — above our launch gate.
- **When does demand for grinch costume adult peak?**
- Demand peaks in Nov–Dec; the busiest month runs 176.9× the quietest.
- **What does it cost to enter the grinch costume adult niche?**
- Listings span $16.51–$137.41; the average listing price is $43.14 (sweet spot $15–$100). The average incumbent carries 181 reviews — the moat a new listing must climb.
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