---
title: "Mad Scientist Costume Kids — Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/mad-scientist-costume-kids"
last_updated: "2026-08-12T13:26:48.627Z"
locale: en
meta:
description: "Amazon product research for mad scientist costume kids: demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for mad scientist costume kids: demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Mad Scientist Costume Kids — Amazon US Product Research"
---
# **Mad Scientist Costume Kids**
**Skip it**
Soft demand (-51.3% this quarter) — this niche doesn't clear our bar today.
Market size 2Growth 0Conversion 20Competition 65Returns 23Price range 76Avg price 86Brand share 61Review moat 90Quality gap 40
**Review moat**
**Great****209.05**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Great****$19.31**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$8.97–$34.29**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Good****46%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Good****68%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Returns**
**Bad****5.5%**
return rate — above 5% kills the launch gate
**Conversion**
**Bad****1.6%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Bad****$9K**
$9K/yr · 30K searches
**Growth**
**Bad****-51.3%**
90-day search growth — must beat 0% to launch
**Signals**[** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
## **Is mad scientist costume kids profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, mad scientist costume kids is a $9K/yr Amazon United States market (30K searches/yr). The top 5 brands hold 68% of demand. Verdict: Skip it — 37/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **mad scientist costume kids market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **750–1K**
- avg 0–100/product
- **Revenue / yr**
- **$14K–$19K**
- units × avg price
- **Conversion rate**
- **1.6%**
- **Avg BSR**
- **#2,303**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **95%**
- **Out of stock**
- **10.0%**
- **Avg brand age**
- **41 months**
- **Avg seller age**
- **215 days**
## **Competition: brands, sellers & click share**
The top 5 products take 46% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**12 **▲rising
**Sellers**
**14**
**Top-5 brand share**
**68%**
Top 20: 100%
**Top-5 click share**
**46%**
Top 20: 100%
**Open market**
**26%**
- mifengda30% - Keymall12% - Kyson11% - ZZIHAN8% - INNOCHEER7% - 2 MULE TEAM6%
## **mad scientist costume kids demand & seasonality**
Weekly Amazon search volume, last 36 weeks — -51.3% search growth over the last 90 days.
3K2KSpike '26Nov '25Dec '25Jan '26Mar '26Apr '26May '26
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/mad-scientist-costume-kids/trend)
## **Top mad scientist 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%$3718%$74312%$1K16%$1K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 19 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**mifengda Mad Scientist Costume Doctor White Lab Coat Halloween Crazy Mad Scientist Physicist Costume Include Lab Coat Wig Glasses Mustache Eyebrows Gloves Bow Tie for Cosplay Pretend Play(Medium)**mifengda**$17.39**4.3★68 rev](https://www.amazon.com/dp/B0D3HK5C3H) [2**mifengda Mad Scientist Costume Kids Doctor White Lab Coat Halloween Crazy Mad Scientist Physicist Costume Include Lab Coat Wig Glasses Mustache Eyebrows Gloves Bow Tie for Cosplay Pretend Play**mifengda**$15.87**4.3★68 rev](https://www.amazon.com/dp/B0CCY3GZ5N) [3**ZZIHAN Scientist Costume for Kids Mad Scientist Lab Coat Costume 56**ZZIHAN**$13.94**4.7★329 rev](https://www.amazon.com/dp/B0BVV53F8S) [4**Kyson Kids Mad Scientist Costume 6 Pieces Science Crazy Lab Coat and Goggles Wig Gloves Bowtie Magnifier Halloween Dress Up (Set A)**Kyson**$33.58**5.0★13 rev](https://www.amazon.com/dp/B0DB5HXN4S) [5**Keymall Mad Scientist Costume for Kids 6 Pieces Halloween Crazy Mad Wig Scientist Lab Coat Mustache Goggles Gloves Bow Tie (Set A)**Keymall**$34.29**4.3★27 rev](https://www.amazon.com/dp/B0C5CCWWCP)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Mad Scientist Costume Kids 6 Pieces Bowtie for Dressing Up Dressing Glasses A Pair of Laboratory Gloves Magnifying Glass Wig PVC Science Name Badge Pass for Science Birthday Party Decorations**2 MULE TEAM**$12.55**8 rev7mo ago](https://www.amazon.com/dp/B0G3WRP2Y5) [**Puteraya 12 PCS Kids Old Man Mad Scientist Costume Crazy Physicist Wig Doctor White Lab Coat Costume for Halloween Cosplay Party (4-6 Years(115cm-125cm))**Puteraya**$19.79**8 rev11mo ago](https://www.amazon.com/dp/B0FJKS15CC) [**UNGLINGA Kids Scientist Costume Lab Coat Doctor Pretend Play for Boys Girls with Goggles Glasses ID Card Gloves for Science Projects Career day Halloween M**UNGLINGA**$9.97**197 rev1y ago](https://www.amazon.com/dp/B0F4R1W76B) [**Kyson 6 Pieces Mad Scientist Costume for Girls-Crazy Science Lab Coat Wig Goggles Gloves Bowtie Brooch for Halloween Dress Up (Set A)**Kyson**$28.24**15 rev1y ago](https://www.amazon.com/dp/B0DB8J96QY) [**Kyson Kids Mad Scientist Costume 6 Pieces Science Crazy Lab Coat and Goggles Wig Gloves Bowtie Magnifier Halloween Dress Up (Set A)**Kyson**$33.58**13 rev1y ago](https://www.amazon.com/dp/B0DB5HXN4S)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**VOGRYE Lab Coat for Girl - White Unisex Kids Doctors Coat Kids Vet Doctor Dress Up Costume for Girl (8/10 White)**VOGRYE**$12.97**4.4★**▲ 1000%**](https://www.amazon.com/dp/B0CGWPJS2H) [**DR Uniforms Kids Lab Coat for Boys & Girls White Science Doctor Jacket Long Sleeve School Lab Coat for STEM Learning Size 8/10**DR Instruments**$16.66**4.6★**▲ 1000%**](https://www.amazon.com/dp/B086SFJ2JQ) [**mifengda Mad Scientist Costume Doctor White Lab Coat Halloween Crazy Mad Scientist Physicist Costume Include Lab Coat Wig Glasses Mustache Eyebrows Gloves Bow Tie for Cosplay Pretend Play(Medium)**mifengda**$17.39**4.3★**▲ 982%**](https://www.amazon.com/dp/B0D3HK5C3H) [**Mad Scientist Costume Kids 6 Pieces Bowtie for Dressing Up Dressing Glasses A Pair of Laboratory Gloves Magnifying Glass Wig PVC Science Name Badge Pass for Science Birthday Party Decorations**2 MULE TEAM**$12.55**3.8★**▲ 755%**](https://www.amazon.com/dp/B0G3WRP2Y5) [**UNGLINGA Kids Scientist Costume Lab Coat Doctor Pretend Play for Boys Girls with Goggles Glasses ID Card Gloves for Science Projects Career day Halloween M**UNGLINGA**$9.97**4.5★**▲ 402%**](https://www.amazon.com/dp/B0F4R1W76B)
**~~View all trending →~~**
## **What reviews say buyers love and hate about mad scientist costume kids**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**26%
*“Fit well”*
**Value For Money**13%
*“it was affordable without compromising the quality”*
**Advertised Vs Actual Product**13%
*“it does the job”*
**Quality-Overall**11%
*“Good quality”*
**Stem Skills**8%
*“Great science kit”*
**Material Quality**6%
*“Nice material too”*
**Accuracy-Overall**4%
*“The set was accurate and complete”*
**Fun/Entertainment Experience**2%
*“It also it great fun for the kiddos to play with in a water table”*
**Add-Ons/Attachments**2%
*“love all the accessories”*
**Educational-Overall**2%
*“Was great for career day at school”*
### **What buyers complain about **
**Size-Overall**33%
*“the whole thing came in a small bag”*
**Quality-Overall**20%
*“Not well made”*
**Ease Of Cleaning**10%
*“Dirty”*
**Material Quality**8%
*“this was very cheap”*
**Product Condition**5%
*“Arrived used”*
**Advertised Vs Actual Product**5%
*“However, they still appear in all photos of kids wearing the set and that makes it confusing for the buyer”*
**Thickness**3%
*“It is pretty thin”*
**Strength**3%
*“Flimsy, cheap material”*
### **Top return reasons **
**Size-Overall**76%
**Quality-Overall**4%
**Value For Money**3%
**Advertised Vs Actual Product**3%
**Material Quality**3%
**Product Condition**2%
**Length**1%
**Sleeve Fit**1%
**Defective Material/Parts**1%
**Thin**1%
## **Common mad scientist costume kids questions**
- **Is mad scientist costume kids profitable to sell on Amazon United States?**
- The niche generates $9K/yr across 19 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -51.3%. Flapen's verdict: Skip it (37/100).
- **How competitive is the mad scientist costume kids niche?**
- 12 brands and 14 sellers compete. The top 5 products take 46% of clicks and top 5 brands hold 68% of demand.
- **What do buyers complain about in mad scientist costume kids?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Ease Of Cleaning. The return rate is 5.5% — above our launch gate.
- **What does it cost to enter the mad scientist costume kids niche?**
- Listings span $8.97–$34.29; the average listing price is $19.31 (sweet spot $15–$100). The average incumbent carries 209 reviews — the moat a new listing must climb.
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