---
title: "Grinch Costume Kids — $9K/mo Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/grinch-costume-kids"
last_updated: "2026-08-12T21:47:23.940Z"
locale: en
meta:
description: "Amazon product research for grinch costume kids: $9K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for grinch costume kids: $9K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Grinch Costume Kids — $9K/mo Amazon US Product Research"
---
# **Grinch Costume Kids**
**Skip it**
Soft demand (-78.1% this quarter) — this niche doesn't clear our bar today.
Market size 25Growth 0Conversion 6Competition 74Returns 1Price range 84Avg price 95Brand share 56Review moat 91Quality gap 53
**Avg price**
**Incredible****$34.19**
avg listing price — sweet spot $15–$100
**Review moat**
**Great****172.07**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Great****$7.63–$61.37**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Good****41%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Good****71%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Market size**
**Okay****$103K**
$103K/yr · 614K searches
**Conversion**
**Bad****0.5%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Bad****11.8%**
return rate — above 5% kills the launch gate
**Growth**
**Bad****-78.1%**
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 kids profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, grinch costume kids is a $103K/yr Amazon United States market (614K searches/yr). The top 5 brands hold 71% of demand. Demand peaks in Oct–Nov–Dec. Verdict: Skip it — 40/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **grinch costume kids market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **5K–6K**
- avg 0–100/product
- **Revenue / yr**
- **$171K–$205K**
- units × avg price
- **Conversion rate**
- **0.5%**
- **Avg BSR**
- **#24,672**
- **Page quality**
- **0%**
- **Prime**
- **93%**
- **Sponsored**
- **68%**
- **Out of stock**
- **20.7%**
- **Avg brand age**
- **37 months**
- **Avg seller age**
- **186 days**
## **Competition: brands, sellers & click share**
The top 5 products take 41% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**23 **—flat
**Sellers**
**24**
**Top-5 brand share**
**71%**
Top 20: 99%
**Top-5 click share**
**41%**
Top 20: 81%
**Open market**
**25%**
- MJC25% - Seven Times Six23% - Socutebabe12% - MOBJVIY8% - The Grinch4% - elope3%
## **grinch costume kids demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -78.1% search growth over the last 90 days.
100K60KPrime Day '24Spike '24Holiday '24Spike '25Holiday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Oct, Nov, Dec · busiest ÷ quietest = 97.8×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/grinch-costume-kids/trend)
## **Top grinch costume kids search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **grinch costume kids**237K/yr-84.7%0.4% conv. - **kids grinch costume**81K/yr-74.7%0.2% conv. - **grinch onesie kids**46K/yr-59.3%0.0% conv. - **toddler grinch costume**40K/yr-67.2%0.2% conv. - **grinch costume for kids**34K/yr-76.6%0.4% conv. - **kids grinch onesie**9K/yr-11.6%0.0% conv. - **grinch onesies for kids**13K/yr+7.8%0.0% conv. - **grinch costume toddler**27K/yr-77.8%0.8% conv. - **grinch kids costume**25K/yr-83.1%0.0% conv. - **the grinch costume for kids**15K/yr-90.5%0.9% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/grinch-costume-kids/search-terms)
## **Top grinch costume kids 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%4%$4K8%$8K12%$12K16%$16K1101001K10K 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**Socutebabe Baby Christmas Costume Toddler Kids Boys Girls Santa Claus Outfit Green Furry Xmas Cosplay Clothes (Green&red 4-5T)**Socutebabe**$19.93**4.4★141 rev](https://www.amazon.com/dp/B0CNTM6MBG) [2**Seven Times Six Dr. Seuss GRINCH Who Stole Christmas Kids Hooded Pajama Union Suit (Green Medium/10)**Seven Times Six**$40.03**4.4★126 rev](https://www.amazon.com/dp/B0D8XJCPXM) [3**Dr. Seuss The Grinch Union Suit Big Kids Santa Claus Costume Kigurumi One Piece Hooded Pajama (8) Green**MJC**$41.75**4.6★23 rev](https://www.amazon.com/dp/B0FRJQC6V2) [4**Dr. Seuss The Grinch Union Suit Big Kids Santa Claus Costume Kigurumi One Piece Hooded Pajama (6/7) Green**MJC**$38.97**4.6★23 rev](https://www.amazon.com/dp/B0FRJYF3XB) [5**Dr. Seuss GRINCH Who Stole Christmas Matching Family Pajama Kids Union Suit 8**Seven Times Six**$39.63**4.5★1,078 rev](https://www.amazon.com/dp/B0BKTZ9891)
**~~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) [**Dr. Seuss The Grinch Union Suit Define Good Kids One Piece Pajama Loungewear (Medium 8)**MJC**$32.47**15 rev9mo ago](https://www.amazon.com/dp/B0FRNDWCM9) [**Dr. Seuss The Grinch Union Suit Define Good Kids One Piece Pajama Loungewear (Large 10/12)**MJC**$35.68**15 rev9mo ago](https://www.amazon.com/dp/B0FRNJ2WZT) [**Dr. Seuss The Grinch Union Suit Big Kids Santa Claus Costume Kigurumi One Piece Hooded Pajama (8) Green**MJC**$41.75**23 rev9mo ago](https://www.amazon.com/dp/B0FRJQC6V2) [**Dr. Seuss The Grinch Union Suit Big Kids Santa Claus Costume Kigurumi One Piece Hooded Pajama (6/7) Green**MJC**$38.97**23 rev9mo ago](https://www.amazon.com/dp/B0FRJYF3XB)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**QSTYLE Unisex Children Green Onesie Halloween Costume Christmas Pajamas For Girls and Boys 8-9Y**QSTYLE**$21.73**4.7★**▲ 858%**](https://www.amazon.com/dp/B0D6QK4BZV) [**Seven Times Six Dr. Seuss GRINCH Who Stole Christmas Kids Hooded Pajama Union Suit (Green XX-Small/4)**Seven Times Six**$42.13**4.4★**▲ 765%**](https://www.amazon.com/dp/B0D81HV7T9) [**WPOZD Deluxe Christmas Mask with Santa Hat Green Plush Fur Holiday Costume Accessory (Green Mask and Gloves)**WPOZD**$34.07**4.0★**▲ 633%**](https://www.amazon.com/dp/B0FYG577TG) [**FUNTEKS Kids Girls Princess Dress Sleeveless Cartoon Casual Dress Christmas Party Dress 3-10 Years**FUNTEKS**$27.56**4.7★**▲ 345%**](https://www.amazon.com/dp/B0CFJHH7YJ) [**Dr. Seuss The Grinch Union Suit Big Kids Santa Claus Costume Kigurumi One Piece Hooded Pajama (14/16) Green**MJC**$48.40**4.6★**▲ 298%**](https://www.amazon.com/dp/B0FRJWGNPV)
**~~View all trending →~~**
## **What reviews say buyers love and hate about grinch costume kids**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**20%
*“fit well”*
**Comfort-Overall**17%
*“comfortable”*
**Quality-Overall**13%
*“Good quality”*
**Soft Feel**8%
*“It's super soft, and comfortable”*
**Material Quality**6%
*“The material was good quality”*
**Durability**5%
*“Well built and has lasted through multiple wearings”*
**Advertised Vs Actual Product**5%
*“Looked just like photos”*
**Value For Money**3%
*“And it is a great value for the price I paid”*
**Warmth**2%
*“it's so warm”*
**Fun/Entertainment Experience**2%
*“Fun costume”*
### **What buyers complain about **
**Size-Overall**38%
*“Runs small”*
**Quality-Overall**11%
*“Cheap”*
**Defective Material/Parts**7%
*“Furry stuff was coming off”*
**Gap/Hole**4%
*“These pajamas were shipped with a gaping hole down one leg”*
**Stitch/Finish/Polish**4%
*“Didn't give full stars the hat was not stitch correctly”*
**Functionality-Overall**4%
*“It sheds a lot which is my biggest issue with it”*
**Value For Money**2%
*“This cost much more”*
**Residue**2%
*“Dirt, leaves, woodchips, everything easily stuck to it”*
**Shape/Style**2%
*“weird cut”*
**Ease Of Cleaning**2%
*“It is a pain to clean if you have a messy child”*
### **Top return reasons **
**Size-Overall**61%
**Length**11%
**Material Quality**3%
**Thigh Fit**2%
**Gap/Hole**2%
**Product Condition**2%
**Zipper Quality**2%
**Stitch/Finish/Polish**2%
**Arm Fit**2%
**Quality-Overall**2%
## **Common grinch costume kids questions**
- **Is grinch costume kids profitable to sell on Amazon United States?**
- The niche generates $103K/yr across 41 tracked products. 1 of 12 products launched in the last 360 days are still selling. 90-day search growth is -78.1%. Flapen's verdict: Skip it (40/100).
- **How competitive is the grinch costume kids niche?**
- 23 brands and 24 sellers compete. The top 5 products take 41% of clicks and top 5 brands hold 71% of demand.
- **What do buyers complain about in grinch costume kids?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Defective Material/Parts. The return rate is 11.8% — above our launch gate.
- **When does demand for grinch costume kids peak?**
- Demand peaks in Oct–Nov–Dec; the busiest month runs 97.8× the quietest.
- **What does it cost to enter the grinch costume kids niche?**
- Listings span $7.63–$61.37; the average listing price is $34.19 (sweet spot $15–$100). The average incumbent carries 172 reviews — the moat a new listing must climb.
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