boo costume
Skip itA small market ($9K/yr) — this niche doesn't clear our bar today.
Avg price
Incredible$23.03avg listing price — sweet spot $15–$100
Price range
Great$4.49–$75.03cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Good67%top-5 brand share — brands hold most of the demand
Competition
Good48%top-5 click share — leaders hold, buyers still browse
Review moat
Good1,114.69avg incumbent reviews — the moat a new listing must climb
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Growth
Okay+4.8%90-day search growth — must beat 0% to launch
Returns
Bad9.2%return rate — above 6% kills the launch gate
Market size
Bad$9K$9K/yr · 234K searches
Conversion
Bad0.2%search→purchase rate — share of searches ending in a sale
Competition
The top 5 products take 48% of clicks — established leaders, but buyers still shop beyond them.Brands
17 falling
Sellers
53
Top-5 brand share
67%
Open market
27%
- elope24%
- Disney23%
- Fun Costumes7%
- Bubblopus7%
- JenPen6%
- MOBJVIY6%
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 26 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
elope Disney Monsters Inc Boo Velour Baby Carrier Cover Costume Infant Halloween Costume Character Standard
elope$40.244.5★75 rev
Infant Disney and Pixar Monster Boo Halloween Costume | Purple Monster Outfit for Babies | Monsters Inc Infant Costume 9/12mo
Fun Costumes$75.034.9★36 rev
JenPen 4 Pcs Halloween Cartoon Costume Pink T-Shirt and Purple Leggings White Socks Purple Hair Ties Set for Costume(3t-4t)
JenPen$28.654.6★33 rev
MOBJVIY Toddler Baby Cute Animal Outfit Hooded Rompers Funny Toddler Halloween Costume Gifts One-piece Outfit (Blue 6-12 Months)
MOBJVIY$26.154.6★101 rev
Disney Monsters Inc. Boo Infant Baby Girls Cosplay Bodysuit and Hat Set 12 Months
Disney$19.704.8★8,653 rev
Newest
by launch dateBubblopus Baby Halloween Costumes Funny Monster Costume Cute Animal Outfit Halloween Gifts for Infant Toddler Kids (Blue 6-12 Months)
Bubblopus$24.980 rev
Bubblopus Baby Halloween Costumes Funny Monster Costume Cute Animal Outfit Halloween Gifts for Infant Toddler Kids (Blue 18-24 Months)
Bubblopus$24.980 rev
Disney Monsters Inc. Mike Wazowski James P. Sullivan Baby Boys 3 Pack Bodysuit Creeper for Newborn and Infant
Disney$21.765 rev
Disney Monsters Inc. Baby Girls Coverall with Cap 2 Piece Set for Newborn and Infant
Disney$17.9716 rev
Disney Monsters Inc. Baby Girls Coverall with Cap 2 Piece Set for Newborn and Infant
Disney$18.2916 rev
Trending
90-day click momentumBubblopus Baby Halloween Costumes Funny Monster Costume Cute Animal Outfit Halloween Gifts for Infant Toddler Kids (Blue 18-24 Months)
Bubblopus$24.980.0★
Bubblopus Baby Halloween Costumes Funny Monster Costume Cute Animal Outfit Halloween Gifts for Infant Toddler Kids (Blue 6-12 Months)
Bubblopus$24.980.0★
Muineobuka My First Halloween Baby Outfit Newborn Long Sleeve Ribbed Romper with Hat Little Boo Halloween Baby Outfits (Apricot 3-6 Months)
Muineobuka$4.492.0★
Disney Monsters Inc. Mike Wazowski James P. Sullivan Baby Boys 3 Pack Bodysuit Creeper for Newborn and Infant
Disney$21.765.0★
Disney Monsters Inc. Baby Girls Coverall with Cap 2 Piece Set for Newborn and Infant
Disney$18.293.9★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +4.8% search growth over the last 90 days.Peak months: Sep, Oct · busiest ÷ quietest = 163.3×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Great quality”
“the onesie fits well”
“Great quality and an excellent gift”
“Super cute and great material”
“Not too bulky”
“very pretty”
“Long zipper looks cute”
“Easy Costume”
“such a great value”
“it still held up perfectly”
What buyers complain about
“Great product and quality i have to return product base it was a little bigger for my baby”