Mad Scientist Costume Kids
Skip itSoft demand (-51.3% this quarter) — this niche doesn't clear our bar today.
Review moat
Great209.05avg incumbent reviews — the moat a new listing must climb
Avg price
Great$19.31avg listing price — sweet spot $15–$100
Price range
Great$8.97–$34.29cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Good46%top-5 click share — leaders hold, buyers still browse
Brand share
Good68%top-5 brand share — brands hold most of the demand
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Returns
Bad5.5%return rate — above 5% kills the launch gate
Conversion
Bad1.6%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
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
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.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.
All 19 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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$17.394.3★68 rev
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$15.874.3★68 rev
ZZIHAN Scientist Costume for Kids Mad Scientist Lab Coat Costume 56
ZZIHAN$13.944.7★329 rev
Kyson Kids Mad Scientist Costume 6 Pieces Science Crazy Lab Coat and Goggles Wig Gloves Bowtie Magnifier Halloween Dress Up (Set A)
Kyson$33.585.0★13 rev
Keymall Mad Scientist Costume for Kids 6 Pieces Halloween Crazy Mad Wig Scientist Lab Coat Mustache Goggles Gloves Bow Tie (Set A)
Keymall$34.294.3★27 rev
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$12.558 rev
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$19.798 rev
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$9.97197 rev
Kyson 6 Pieces Mad Scientist Costume for Girls-Crazy Science Lab Coat Wig Goggles Gloves Bowtie Brooch for Halloween Dress Up (Set A)
Kyson$28.2415 rev
Kyson Kids Mad Scientist Costume 6 Pieces Science Crazy Lab Coat and Goggles Wig Gloves Bowtie Magnifier Halloween Dress Up (Set A)
Kyson$33.5813 rev
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$12.974.4★
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$16.664.6★
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$17.394.3★
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$12.553.8★
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$9.974.5★
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
“Fit well”
“it was affordable without compromising the quality”
“it does the job”
“Good quality”
“Great science kit”
“Nice material too”
“The set was accurate and complete”
“It also it great fun for the kiddos to play with in a water table”
“love all the accessories”
“Was great for career day at school”
What buyers complain about
“the whole thing came in a small bag”
“Not well made”
“Dirty”
“this was very cheap”
“Arrived used”
“However, they still appear in all photos of kids wearing the set and that makes it confusing for the buyer”
“It is pretty thin”
“Flimsy, cheap material”
Top return reasons
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.