---
title: "Roz Monsters Inc Costume — $11K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/roz-monsters-inc-costume"
last_updated: "2026-08-11T00:08:29.365Z"
locale: en
meta:
description: "Niche score 40/100 · $11K/yr market · 65K searches/yr · $32.56 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 40/100 · $11K/yr market · 65K searches/yr · $32.56 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Roz Monsters Inc Costume — $11K/yr Amazon US Niche (2026) - Flapen"
---
# **roz monsters inc costume**
**Skip it**
High returns (14.6%) — this niche doesn't clear our bar today.
Market size 3Growth 69Conversion 7Competition 34Returns 0Price range 86Avg price 95Brand share 58Review moat 40Quality gap 72
**Avg price**
**Incredible****$32.56**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$9.83–$104.94**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Growth**
**Good****+49.7%**
90-day search growth — must beat 0% to launch
**Brand share**
**Good****70%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Okay****2,455.1**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Okay****65%**
top-5 click share — leaders hold, buyers still browse
**Conversion**
**Bad****0.5%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Bad****$11K**
$11K/yr · 65K searches
**Returns**
**Bad****14.6%**
return rate — above 5% kills the launch gate
**Signals**[** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United States niche tracking, roz monsters inc costume is a $11K/yr Amazon United States market (65K searches/yr). The top 5 brands hold 70% of demand. Verdict: Skip it — 40/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **roz monsters inc costume market data**
- **Units sold / yr**
- **1K–2K**
- avg 100–250/product
- **Revenue / yr**
- **$41K–$49K**
- units × avg price
- **Conversion rate**
- **0.5%**
- **Avg BSR**
- **#11,305**
- **Page quality**
- **0%**
- **Prime**
- **70%**
- **Sponsored**
- **45%**
- **Out of stock**
- **18.3%**
- **Avg brand age**
- **50 months**
- **Avg seller age**
- **183 days**
## **Competition & brand share**
The top 5 products take 65% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**15 **▲rising
**Sellers**
**17**
**Top-5 brand share**
**70%**
Top 20: 100%
**Top-5 click share**
**65%**
Top 20: 100%
**Open market**
**25%**
- COSUSKET21% - Daifunli20% - Maiteenly15% - QACCF7% - Lock and Love7% - Beauty Shine5%
## **Demand**
Weekly Amazon search volume, last 38 weeks — +49.7% search growth over the last 90 days.
9K7KSpike '26Oct '25Nov '25Jan '26Feb '26Apr '26May '26
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/roz-monsters-inc-costume/trend)
## **Top roz monsters inc costume search terms**
- **roz monsters inc costume**44K/yr+57.0%1.1% conv. - **roz costume monsters inc**7K/yr+47.7%1.5% conv. - **monsters inc roz costume**5K/yr+38.7%1.2% conv. - **roz costume**4K/yr+21.0%1.6% conv. - **roz monsters inc costume adult**5K/yr+125.0%0.0% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/roz-monsters-inc-costume/search-terms)
## **Top roz monsters inc costume 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.
0%10%$1K20%$2K30%$3K40%$4K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 20 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Daifunli 3 Pcs Halloween Administrator Accessories Set Grey Flame Wig Cat Eyeglasses with Chain Beaded for Women**Daifunli**$27.31**3.6★22 rev](https://www.amazon.com/dp/B0FCRHYJ56) [2**COSUSKET Snug Fit Unisex Adult Onesie Pajamas Flannel Cosplay Animal One Piece Halloween Costume Sleepwear Homewear**COSUSKET**$26.56**4.6★299 rev](https://www.amazon.com/dp/B097ZL2HPP) [3**Maiteenly 5 Pcs Halloween Monster Costumes Accessories Include Grey Flame Wig Cat Eyeglasses Pearl Eyeglass Chain Pencil and Plastic Clipboard for Women Cos**Maiteenly**$27.29**3.5★38 rev](https://www.amazon.com/dp/B0FCFT63L4) [4**QACCF Halloween Costume Old Lady Costume Gray Wig with Beaded Necklace Chain Cat Eye Glasses**QACCF**$28.58**3.8★16 rev](https://www.amazon.com/dp/B0FRG9R3WD) [5**Lock and Love LL WB1434 Womens Solid Maxi Skirt with Elastic Waist Band XXXL Taupe**Lock and Love**$20.52**4.2★11,240 rev](https://www.amazon.com/dp/B07KXQ8M5Z)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**JVZJVZ Big mouth monster jumpsuit funny jumpsuit monster jumpsuit warm home clothes party costumes (US Alpha Large Regular Regular Purple)**JVZJVZ**$38.69**15 rev3mo ago](https://www.amazon.com/dp/B0GVFSDZNJ) [**QACCF Halloween Costume Old Lady Costume Gray Wig with Beaded Necklace Chain Cat Eye Glasses**QACCF**$28.58**16 rev9mo ago](https://www.amazon.com/dp/B0FRG9R3WD) [**Daifunli 3 Pcs Halloween Administrator Accessories Set Grey Flame Wig Cat Eyeglasses with Chain Beaded for Women**Daifunli**$27.31**22 rev1y ago](https://www.amazon.com/dp/B0FCRHYJ56) [**Maiteenly 5 Pcs Halloween Monster Costumes Accessories Include Grey Flame Wig Cat Eyeglasses Pearl Eyeglass Chain Pencil and Plastic Clipboard for Women Cos**Maiteenly**$27.29**38 rev1y ago](https://www.amazon.com/dp/B0FCFT63L4) [**Fun Costumes Womens Pixar Monsters Inc. Mike Wazowski Costume - Shirt Skirt Headband & Gloves**Fun Costumes**$90.52**3 rev1y ago](https://www.amazon.com/dp/B0F7RX2S7W)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**JVZJVZ Big mouth monster jumpsuit funny jumpsuit monster jumpsuit warm home clothes party costumes (US Alpha Large Regular Regular Purple)**JVZJVZ**$38.69**3.5★**▲ 1000%**](https://www.amazon.com/dp/B0GVFSDZNJ) [**Fun Costumes Womens Pixar Monsters Inc. Mike Wazowski Costume - Shirt Skirt Headband & Gloves**Fun Costumes**$90.52**5.0★**▲ 1000%**](https://www.amazon.com/dp/B0F7RX2S7W) [**Urban CoCo Elastic Waist A-Line Long Maxi Skirt Below Knee for Women(XL Black)**Urban CoCo**$21.83**4.2★**▲ 1000%**](https://www.amazon.com/dp/B0DLN6KPQV) [**COSUSKET Snug Fit Unisex Adult Onesie Pajamas Flannel Cosplay Animal One Piece Halloween Costume Sleepwear Homewear**COSUSKET**$26.56**4.6★**▲ 1000%**](https://www.amazon.com/dp/B097ZL2HPP) [**Beauty Shine Unisex Adult Onesie One Piece Pajamas Cosplay Cartoon Costume Halloween Christmas Sleepwear Jumpsuit Plush Homewear(Mike Wazowski Small)**Beauty Shine**$26.30**4.5★**▲ 1000%**](https://www.amazon.com/dp/B07XJK65KR)
**~~View all trending →~~**
## **What buyers say about roz monsters inc costume**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**18%
*“Warm and quality costume for Halloween”*
**Color**15%
*“the color on it”*
**Size-Overall**15%
*“Fit perfectly”*
**Fun/Entertainment Experience**8%
*“Funny and stayed on”*
**Wrinkle**8%
*“I love this skirt, it resists wrinkles, and looks great”*
**Warmth**5%
*“The plush material makes it incredibly warm home loungewear”*
**Material Quality**4%
*“Fabric is amazing great for cold weather”*
**Weather Proof**3%
*“Fabric is amazing great for cold weather”*
**Transparency**3%
*“is opaque”*
**Pockets/Compartments**3%
*“With pockets”*
### **What buyers complain about **
**Quality-Overall**36%
*“the overall construction quality was disappointing”*
**Value For Money**14%
*“Price high”*
**Comfort-Overall**14%
*“So awkward in the middle”*
**Size-Overall**10%
*“Didn't fit, came ripped”*
**Defective Material/Parts**7%
*“Parts missing”*
**Handle Quality**5%
*“came ripped in the hand part”*
**Thickness**5%
*“the material was a bit too thick - it took longer than everything else to dry in the dryer”*
### **Top return reasons **
**Size-Overall**55%
**Length**11%
**Waist Fit**8%
**Thigh Fit**4%
**Width**2%
**Color**2%
**Material Quality**2%
**Quality-Overall**2%
**Advertised Vs Actual Product**1%
**Value For Money**1%
## **Common questions**
- **Is roz monsters inc costume profitable to sell on Amazon United States?**
- The niche generates $11K/yr across 20 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is +49.7%. Flapen's verdict: Skip it (40/100).
- **How competitive is the roz monsters inc costume niche?**
- 15 brands and 17 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 70% of demand.
- **What do buyers complain about in roz monsters inc costume?**
- Top complaints mined from reviews: Quality-Overall, Value For Money, Comfort-Overall. The return rate is 14.6% — above our launch gate.
- **What does it cost to enter the roz monsters inc costume niche?**
- Listings span $9.83–$104.94; the average listing price is $32.56 (sweet spot $15–$100). The average incumbent carries 2,455 reviews — the moat a new listing must climb.
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