18 month girl halloween costume
Skip itA small market ($0/yr) — this niche doesn't clear our bar today.
Avg price
Great$22.39avg listing price — sweet spot $15–$100
Price range
Great$14.02–$44.88cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Great44%top-5 brand share — no brand owns this niche
Competition
Good50%top-5 click share — leaders hold, buyers still browse
Review moat
Good1,332.79avg incumbent reviews — the moat a new listing must climb
Returns
Okay5.4%return rate — above 6% kills the launch gate
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Growth
Bad-21.2%90-day search growth — must beat 0% to launch
Market size
Bad$0$0/yr · 198K searches
Conversion
Bad0.0%search→purchase rate — share of searches ending in a sale
Competition
The top 5 products take 50% of clicks — established leaders, but buyers still shop beyond them.Brands
18 rising
Sellers
21
Top-5 brand share
44%
Open market
50%
- Yruiz13%
- Saliuentm9%
- Fun Costumes9%
- Thorn Tree7%
- IMEKIS7%
- Gakizon6%
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 19 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Yruiz Newborn Baby Girl Halloween Cowgirl Costume Romper Dress Outfits Skirt Set Birthday Bodysuit With Headband18-24 Months
Yruiz$18.623.9★10 rev
Saliuentm Toddler Girl Halloween Outfits Long Sleeve Romper Onesie Bee Suspender Skirt Dress My First Halloween Baby Girl Outfit (B-Yellow 12-18 Months)
Saliuentm$19.034.7★225 rev
Fun Costumes Infant Girl Bat Halloween Costume | Baby Pink Vampire Bat Hooded Bodysuit with Wings 0/3 Months
Fun Costumes$44.884.7★266 rev
Thorn Tree Kids Firefighter Outfit Short Sleeve T-Shirt Suspender Pants Overalls Halloween Birthday Outfits (Blue 18-24 Months)
Thorn Tree$17.314.7★167 rev
Gakizon Baby Boy Halloween outfits Infant baby Toddler Boy Chucky Outfit Good guy Outfits
Gakizon$35.924.6★256 rev
Newest
by launch dateThorn Tree Kids Firefighter Outfit Short Sleeve T-Shirt Suspender Pants Overalls Halloween Birthday Outfits (Blue 18-24 Months)
Thorn Tree$17.31167 rev
Xuomuen Cowboy Costume Romper with Brown sheriff Hat Baby Dress Up Outfit Yellow and Blue 18-24 Months
Xuomuen$19.41121 rev
Baby Boy Girl Dinosaur Costume Cute Sleeveless Romper with Hat Newborn Infant Halloween Cosplay Clothes (Emerald 6-12 Months)
Dcohmch$19.56167 rev
Madjtlqy Baby Halloween Costumes Toddler Girl Boy Fruit Outfits Clothes Hooded Romper Jumpsuit With Long Socks (Blueberry 6-12 Months)
Madjtlqy$17.1024 rev
Rarjuiey Halloween Toddler Girl Outfit Boo Romper Spaghetti Strap Ghost Jumpsuit Bell Bottoms Outfits Spooky Clothes (Boo Ghost Black 18-24 Months)
Rarjuiey$16.91141 rev
Trending
90-day click momentum
Highnesson-ww Baby Boy Funny First Birthday Clothes Infant Clothes Bow Tie Blue Romper Pants Set Suspenders Cake Smash Outfits
Highnesson-ww$19.184.6★
Yruiz Newborn Baby Girl Halloween Cowgirl Costume Romper Dress Outfits Skirt Set Birthday Bodysuit With Headband18-24 Months
Yruiz$18.623.9★
IBTOM CASTLE Baby Boys Wild One Birthday Outfit Jungle Forest Explorer Shirt + Shorts + Hat + Bandana Safari First Birthday Zoo Party Cake Smash Photoshoot Dress Clothes Khaki 12-18 Months
IBTOM CASTLE$28.694.5★
Marvel Avengers Captain America Infant Baby Boys Cosplay Romper Blue 18 Months
Marvel$17.834.8★
WZTYYDS Baby Girl First Birthday Outfit In My One Year Old Era Top Short Sleeve 1st Birthday Shirt + Casual Shorts Set (Pink 12-18 Months)
WZTYYDS$14.024.7★
Demand & seasonality
Weekly Amazon search volume, last 92 weeks — -21.2% search growth over the last 90 days.Peak months: Sep, Oct · busiest ÷ quietest = 361.6×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Good fit”
“is accurate to the picture”
“Soft and pictures shown are accurate”
“Good quality”
“Perfect fit and comfy”
“Color is perfect”
“Easy to get on & off”
“My son loves wearing it its easy to put on and lightweight”
“Good material, Ive washed twice since I bought it and still look great”
“was a good price for such a high quality costume”
What buyers complain about
“It was a little big”
“Wont come new”
“Not at all what I expected material is clingy”
“Smelled awful”
“A little long on my 22 month old”
“Not worth the price”