---
title: "Dr Nefario Costume — $3K/mo Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/dr-nefario-costume"
last_updated: "2026-08-12T05:34:32.989Z"
locale: en
meta:
description: "Amazon product research for dr nefario costume: $3K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for dr nefario costume: $3K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Dr Nefario Costume — $3K/mo Amazon US Product Research"
---
# **Dr Nefario Costume**
**Skip it**
A small market ($40K/yr) — this niche doesn't clear our bar today.
Market size 10Growth 19Conversion 55Competition 13Returns 18Price range 87Avg price 95Brand share 25Review moat 32Quality gap 43
**Avg price**
**Incredible****$23.64**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$7.67–$82.33**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Good****4.7%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****3,294.3**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Bad****90%**
top-5 brand share — brand-locked demand
**Growth**
**Bad****-11.7%**
90-day search growth — must beat 0% to launch
**Returns**
**Bad****6.9%**
return rate — above 5% kills the launch gate
**Competition**
**Bad****84%**
top-5 click share — a locked-up shelf
**Market size**
**Bad****$40K**
$40K/yr · 36K searches
**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 dr nefario costume profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, dr nefario costume is a $40K/yr Amazon United States market (36K searches/yr). The top 5 brands hold 90% of demand. Demand peaks in Sep–Oct–Nov. Verdict: Skip it — 31/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **dr nefario costume market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **1K–2K**
- avg 100–250/product
- **Revenue / yr**
- **$30K–$35K**
- units × avg price
- **Conversion rate**
- **4.7%**
- **Avg BSR**
- **#1,504**
- **Page quality**
- **0%**
- **Prime**
- **90%**
- **Sponsored**
- **70%**
- **Out of stock**
- **21.4%**
- **Avg brand age**
- **55 months**
- **Avg seller age**
- **211 days**
## **Competition: brands, sellers & click share**
The top 5 products capture 84% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**8 **▼falling
**Sellers**
**25**
**Top-5 brand share**
**90%**
Top 20: 100%
**Top-5 click share**
**84%**
Top 20: 100%
**Open market**
**6%**
- SATINIOR52% - Fun Costumes20% - WEICHUAN7% - VOGRYE6% - ROYAKI5% - BendyFigs4% - Open — no brand owns it (2 brands, 6%)
## **dr nefario costume demand & seasonality**
Weekly Amazon search volume, last 84 weeks — -11.7% search growth over the last 90 days.
7K5KHoliday '24Spike '25Prime Day '25Spike '26 seasonDecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Sep, Oct, Nov · busiest ÷ quietest = 77.7×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/dr-nefario-costume/trend)
## **Top dr nefario costume search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **dr nefario costume**26K/yr-6.8%2.2% conv. - **dr nefario**3K/yr-2.0%3.7% conv. - **dr nefario costume adult**7K/yr-78.4%0.0% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/dr-nefario-costume/search-terms)
## **Top dr nefario 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%15%$6K30%$12K45%$18K60%$24K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 10 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**SATINIOR 6 Pieces Mad Scientist Costume Adult Lab Coat Brown Costume Back to The Future Man Wig Goggles Props(X-Large)**SATINIOR**$29.42**4.6★231 rev](https://www.amazon.com/dp/B09T9W16GX) [2**Adult Dr. Nefario Costume | Mens Despicable Me Movie Grus Gadgeteer Supervillain Outfit with Lab Coat Mask Pants Gloves Large**Fun Costumes**$82.33**4.7★19 rev](https://www.amazon.com/dp/B0DHLKWYLB) [3**SATINIOR 6 Pieces Mad Scientist Costume Adult Lab Coat Brown Costume Back to The Future Man Wig Goggles Props(3X-Large)**SATINIOR**$30.12**4.6★231 rev](https://www.amazon.com/dp/B0BJ72ZY9T) [4**WEICHUAN Vintage Steampunk Goggles Mad Scientist Goggles Cosplay Punk Glasses for Adult Women Men Halloween Costume(Black)**WEICHUAN**$7.67**4.6★3,924 rev](https://www.amazon.com/dp/B07FNLZ1S7) [5**ROYAKI Chemical Resistant Gloves Work Heavy Duty Industrial Rubber Gloves 12.2 1 Pair Size Medium**ROYAKI**$7.76**4.2★2,825 rev](https://www.amazon.com/dp/B09B3D57FN)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Adult Dr. Nefario Costume | Mens Despicable Me Movie Grus Gadgeteer Supervillain Outfit with Lab Coat Mask Pants Gloves Large**Fun Costumes**$82.33**19 rev1y ago](https://www.amazon.com/dp/B0DHLKWYLB) [**BendyFigs Minions Dr. Nefario**BendyFigs**$16.26**53 rev3y ago](https://www.amazon.com/dp/B0BGYGTQGW) [**SATINIOR 6 Pieces Mad Scientist Costume Adult Lab Coat Brown Costume Back to The Future Man Wig Goggles Props(X-Large)**SATINIOR**$29.42**231 rev4y ago](https://www.amazon.com/dp/B09T9W16GX) [**SATINIOR 6 Pieces Mad Scientist Costume Adult Lab Coat Brown Costume Back to The Future Man Wig Goggles Props(3X-Large)**SATINIOR**$30.12**231 rev4y ago](https://www.amazon.com/dp/B0BJ72ZY9T) [**ROYAKI Chemical Resistant Gloves Work Heavy Duty Industrial Rubber Gloves 12.2 1 Pair Size Medium**ROYAKI**$7.76**2,825 rev4y ago](https://www.amazon.com/dp/B09B3D57FN)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**SATINIOR 6 Pieces Mad Scientist Costume Adult Lab Coat Brown Costume Back to The Future Man Wig Goggles Props(3X-Large)**SATINIOR**$30.12**4.6★**▲ 627%**](https://www.amazon.com/dp/B0BJ72ZY9T) [**SATINIOR 6 Pieces Mad Scientist Costume Adult Lab Coat Brown Costume Back to The Future Man Wig Goggles Props(X-Large)**SATINIOR**$29.42**4.6★**▲ 193%**](https://www.amazon.com/dp/B09T9W16GX) [**Rubies Alien Egg Cap Headpiece for Adults Unisex No Size**Rubies**$25.44**4.3★**▲ 148%**](https://www.amazon.com/dp/B001K3A45M) [**BendyFigs Minions Dr. Nefario**BendyFigs**$16.26**4.6★**▲ 87%**](https://www.amazon.com/dp/B0BGYGTQGW) [**TamBee Black Steampunk Goggles Costume Cosplay Goggle Mad Scientist Goggles - Round Goggle Black Lens Elastic Band for Halloween Party Adult Women Men**TamBee**$7.88**4.5★**▲ 75%**](https://www.amazon.com/dp/B072V7ZYF2)
**~~View all trending →~~**
## **What reviews say buyers love and hate about dr nefario costume**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**29%
*“Good quality”*
**Size-Overall**10%
*“Fits well”*
**Value For Money**9%
*“price was right”*
**Comfort-Overall**9%
*“The VOGRYE lab coat is comfortable and stylish, ideal for professionals”*
**Durability**6%
*“No tears, or holes so far”*
**Color**6%
*“Nice color”*
**Flexibility**2%
*“flexible too”*
**Ease Of Use**2%
*“Good use, feels good, cant complain”*
**Advertised Vs Actual Product**2%
*“As described”*
**Weight Heavy**2%
*“Great heavier gloves”*
### **What buyers complain about **
**Quality-Overall**13%
*“Cheaply made”*
**Size-Overall**10%
*“The cone was just much smaller than expected”*
**Durability**8%
*“they punctured within two months”*
**Thin**7%
*“Very thin”*
**Stain Resistance**7%
*“the literally melted leaving black stains on anything i touched”*
**Product Condition**7%
*“Thought I was buying a NEW product. Came scratched and already used.”*
**Thickness**5%
*“They are a bit thicker than the latex gloves I use for non caustic projects”*
**Value For Money**3%
*“Same problem just more expensive”*
**Transparency**3%
*“wrinkly and see through”*
**Material Quality**3%
*“Poor quality material”*
### **Top return reasons **
**Size-Overall**48%
**Sleeve Fit**8%
**Material Quality**7%
**Length**6%
**Quality-Overall**5%
**Thin**4%
**Shoulder Fit**3%
**Advertised Vs Actual Product**3%
**Arm Fit**2%
**Value For Money**2%
## **Common dr nefario costume questions**
- **Is dr nefario costume profitable to sell on Amazon United States?**
- The niche generates $40K/yr across 10 tracked products. 90-day search growth is -11.7%. Flapen's verdict: Skip it (31/100).
- **How competitive is the dr nefario costume niche?**
- 8 brands and 25 sellers compete. The top 5 products take 84% of clicks and top 5 brands hold 90% of demand.
- **What do buyers complain about in dr nefario costume?**
- Top complaints mined from reviews: Quality-Overall, Size-Overall, Durability. The return rate is 6.9% — above our launch gate.
- **When does demand for dr nefario costume peak?**
- Demand peaks in Sep–Oct–Nov; the busiest month runs 77.7× the quietest.
- **What does it cost to enter the dr nefario costume niche?**
- Listings span $7.67–$82.33; the average listing price is $23.64 (sweet spot $15–$100). The average incumbent carries 3,294 reviews — the moat a new listing must climb.
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