---
title: "18 month girl halloween costume — Niche Verdict: Skip it (38/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/clothing-shoes-jewelry/18-month-girl-halloween-costume"
last_updated: "2026-07-13T20:54:29.370Z"
locale: en
meta:
  description: "a small market ($0/yr) — 18 month girl halloween costume doesn't clear our bar today."
  "og:description": "a small market ($0/yr) — 18 month girl halloween costume doesn't clear our bar today."
  "og:title": "18 month girl halloween costume — Niche Verdict: Skip it (38/100) | Amazon United States - Flapen"
---

Back to Flapen home

# **18 month girl halloween costume**

**Skip it**

A small market ($0/yr) — this niche doesn't clear our bar today.

Market size 0Growth 14Conversion 0Competition 59Returns 30Price range 92Avg price 93Brand share 91Review moat 54Quality gap 27

**Avg price**

**Great****$22.39**

avg listing price — sweet spot $15–$100

**Price range**

**Great****$14.02–$44.88**

cheapest to priciest tracked listing — scored on the share inside $15–$100

**Brand share**

**Great****44%**

top-5 brand share — no brand owns this niche

**Competition**

**Good****50%**

top-5 click share — leaders hold, buyers still browse

**Review moat**

**Good****1,332.79**

avg incumbent reviews — the moat a new listing must climb

**Returns**

**Okay****5.4%**

return rate — above 6% kills the launch gate

**Quality gap**

**Okay****4.6★**

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**

**Bad****0.0%**

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.

0%4%$08%$012%$016%$0101001K10K100K 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![Yruiz Newborn Baby Girl Halloween Cowgirl Costume Romper Dress Outfits Skirt Set Birthday Bodysuit With Headband18-24 Months](https://m.media-amazon.com/images/I/415E81AKHAL.jpg)**Yruiz Newborn Baby Girl Halloween Cowgirl Costume Romper Dress Outfits Skirt Set Birthday Bodysuit With Headband18-24 Months**Yruiz**$18.62**3.9★10 rev](https://www.amazon.com/dp/B0F53KSTJB) [2![Saliuentm Toddler Girl Halloween Outfits Long Sleeve Romper Onesie Bee Suspender Skirt Dress My First Halloween Baby Girl Outfit (B-Yellow 12-18 Months)](https://m.media-amazon.com/images/I/41Fe5UvGCsL.jpg)**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**$19.03**4.7★225 rev](https://www.amazon.com/dp/B0D96439SH) [3![Fun Costumes Infant Girl Bat Halloween Costume | Baby Pink Vampire Bat Hooded Bodysuit with Wings 0/3 Months](https://m.media-amazon.com/images/I/41DLWhEKNKL.jpg)**Fun Costumes Infant Girl Bat Halloween Costume | Baby Pink Vampire Bat Hooded Bodysuit with Wings 0/3 Months**Fun Costumes**$44.88**4.7★266 rev](https://www.amazon.com/dp/B09HCV2Z8H) [4![Thorn Tree Kids Firefighter Outfit Short Sleeve T-Shirt Suspender Pants Overalls Halloween Birthday Outfits (Blue 18-24 Months)](https://m.media-amazon.com/images/I/31cGNhWYYtL.jpg)**Thorn Tree Kids Firefighter Outfit Short Sleeve T-Shirt Suspender Pants Overalls Halloween Birthday Outfits (Blue 18-24 Months)**Thorn Tree**$17.31**4.7★167 rev](https://www.amazon.com/dp/B0FMYB6N25) [5![Gakizon Baby Boy Halloween outfits Infant baby Toddler Boy Chucky Outfit Good guy Outfits](https://m.media-amazon.com/images/I/41RCaLegm+L.jpg)**Gakizon Baby Boy Halloween outfits Infant baby Toddler Boy Chucky Outfit Good guy Outfits**Gakizon**$35.92**4.6★256 rev](https://www.amazon.com/dp/B0D8ZPZ9HK)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![Thorn Tree Kids Firefighter Outfit Short Sleeve T-Shirt Suspender Pants Overalls Halloween Birthday Outfits (Blue 18-24 Months)](https://m.media-amazon.com/images/I/31cGNhWYYtL.jpg)**Thorn Tree Kids Firefighter Outfit Short Sleeve T-Shirt Suspender Pants Overalls Halloween Birthday Outfits (Blue 18-24 Months)**Thorn Tree**$17.31**167 rev10mo ago](https://www.amazon.com/dp/B0FMYB6N25) [![Xuomuen Cowboy Costume Romper with Brown sheriff Hat Baby Dress Up Outfit Yellow and Blue 18-24 Months](https://m.media-amazon.com/images/I/51-8r4vYGuL.jpg)**Xuomuen Cowboy Costume Romper with Brown sheriff Hat Baby Dress Up Outfit Yellow and Blue 18-24 Months**Xuomuen**$19.41**121 rev11mo ago](https://www.amazon.com/dp/B0F3WXG48T) [![Baby Boy Girl Dinosaur Costume Cute Sleeveless Romper with Hat Newborn Infant Halloween Cosplay Clothes (Emerald 6-12 Months)](https://m.media-amazon.com/images/I/410IJCszPvL.jpg)**Baby Boy Girl Dinosaur Costume Cute Sleeveless Romper with Hat Newborn Infant Halloween Cosplay Clothes (Emerald 6-12 Months)**Dcohmch**$19.56**167 rev1y ago](https://www.amazon.com/dp/B0FFGTHML9) [![Madjtlqy Baby Halloween Costumes Toddler Girl Boy Fruit Outfits Clothes Hooded Romper Jumpsuit With Long Socks (Blueberry 6-12 Months)](https://m.media-amazon.com/images/I/41t+77IUPtL.jpg)**Madjtlqy Baby Halloween Costumes Toddler Girl Boy Fruit Outfits Clothes Hooded Romper Jumpsuit With Long Socks (Blueberry 6-12 Months)**Madjtlqy**$17.10**24 rev1y ago](https://www.amazon.com/dp/B0FF4Y5256) [![Rarjuiey Halloween Toddler Girl Outfit Boo Romper Spaghetti Strap Ghost Jumpsuit Bell Bottoms Outfits Spooky Clothes (Boo Ghost Black 18-24 Months)](https://m.media-amazon.com/images/I/31vvDBBS-FL.jpg)**Rarjuiey Halloween Toddler Girl Outfit Boo Romper Spaghetti Strap Ghost Jumpsuit Bell Bottoms Outfits Spooky Clothes (Boo Ghost Black 18-24 Months)**Rarjuiey**$16.91**141 rev1y ago](https://www.amazon.com/dp/B0FBRSGHC7)

**~~View all new products →~~**

### **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](https://m.media-amazon.com/images/I/31bdxrIOcDL.jpg)**Highnesson-ww Baby Boy Funny First Birthday Clothes Infant Clothes Bow Tie Blue Romper Pants Set Suspenders Cake Smash Outfits**Highnesson-ww**$19.18**4.6★**▲ 325%**](https://www.amazon.com/dp/B0C81Z7PW9) [![Yruiz Newborn Baby Girl Halloween Cowgirl Costume Romper Dress Outfits Skirt Set Birthday Bodysuit With Headband18-24 Months](https://m.media-amazon.com/images/I/415E81AKHAL.jpg)**Yruiz Newborn Baby Girl Halloween Cowgirl Costume Romper Dress Outfits Skirt Set Birthday Bodysuit With Headband18-24 Months**Yruiz**$18.62**3.9★**▲ 308%**](https://www.amazon.com/dp/B0F53KSTJB) [![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](https://m.media-amazon.com/images/I/41sadgSf6wL.jpg)**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**$28.69**4.5★**▲ 295%**](https://www.amazon.com/dp/B0F6YPBZQN) [![Marvel Avengers Captain America Infant Baby Boys Cosplay Romper Blue 18 Months](https://m.media-amazon.com/images/I/41mwyzjL5jL.jpg)**Marvel Avengers Captain America Infant Baby Boys Cosplay Romper Blue 18 Months**Marvel**$17.83**4.8★**▲ 284%**](https://www.amazon.com/dp/B0C82TR6HS) [![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)](https://m.media-amazon.com/images/I/31UpKU3byHL.jpg)**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**$14.02**4.7★**▲ 269%**](https://www.amazon.com/dp/B0DRNMQM9V)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 92 weeks — -21.2% search growth over the last 90 days.

50K30KSpike '24Spike '25Spike '26 seasonAugSepOctNovJanMarAprJunJulAugSepOctNovDecJanMarAprMayJun

Peak months: Sep, Oct · busiest ÷ quietest = 361.6×

## **Reviews**

What buyers praise and complain about, mined from review topics.

### **What buyers love **

**Size-Overall**44%

*“Good fit”*

**Advertised Vs Actual Product**9%

*“is accurate to the picture”*

**Soft Feel**8%

*“Soft and pictures shown are accurate”*

**Quality-Overall**8%

*“Good quality”*

**Comfort-Overall**8%

*“Perfect fit and comfy”*

**Color**6%

*“Color is perfect”*

**Ease Of Use**5%

*“Easy to get on & off”*

**Weight Light**2%

*“My son loves wearing it its easy to put on and lightweight”*

**Washability**2%

*“Good material, Ive washed twice since I bought it and still look great”*

**Value For Money**2%

*“was a good price for such a high quality costume”*

### **What buyers complain about **

**Size-Overall**31%

*“It was a little big”*

**Product Condition**19%

*“Wont come new”*

**Material Quality**13%

*“Not at all what I expected material is clingy”*

**Smell**13%

*“Smelled awful”*

**Length**6%

*“A little long on my 22 month old”*

**Value For Money**6%

*“Not worth the price”*

### **Top return reasons **

**Size-Overall**72%

**Length**10%

**Material Quality**5%

**Color**2%

**Advertised Vs Actual Product**2%

**Quality-Overall**2%

**Chest Fit**1%

**Product Condition**1%

**Waist Fit**1%

**Sleeve Fit**1%