---
title: "Girls Alien Costume — $6K/mo Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/girls-alien-costume"
last_updated: "2026-08-12T18:01:55.609Z"
locale: en
meta:
description: "Amazon product research for girls alien costume: $6K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for girls alien costume: $6K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Girls Alien Costume — $6K/mo Amazon US Product Research"
---
# **Girls Alien Costume**
**Skip it**
High returns (10.9%) — this niche doesn't clear our bar today.
Market size 17Growth 7Conversion 31Competition 77Returns 4Price range 87Avg price 95Brand share 80Review moat 91Quality gap 38
**Avg price**
**Incredible****$26.77**
avg listing price — sweet spot $15–$100
**Review moat**
**Great****188.8**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Great****$10.33–$58.40**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Great****55%**
top-5 brand share — no brand owns this niche
**Competition**
**Great****38%**
top-5 click share — an open shelf
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Okay****2.5%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Bad****$67K**
$67K/yr · 101K searches
**Growth**
**Bad****-35.0%**
90-day search growth — must beat 0% to launch
**Returns**
**Bad****10.9%**
return rate — above 5% kills the launch gate
**Signals**[** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
## **Is girls alien costume profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, girls alien costume is a $67K/yr Amazon United States market (101K searches/yr). The top 5 brands hold 55% of demand. Demand peaks in Sep–Oct. Verdict: Skip it — 44/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **girls alien costume market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **2K–3K**
- avg 0–100/product
- **Revenue / yr**
- **$54K–$67K**
- units × avg price
- **Conversion rate**
- **2.5%**
- **Avg BSR**
- **#1,323**
- **Page quality**
- **0%**
- **Prime**
- **94%**
- **Sponsored**
- **86%**
- **Out of stock**
- **2.3%**
- **Avg brand age**
- **34 months**
- **Avg seller age**
- **183 days**
## **Competition: brands, sellers & click share**
Clicks spread well past the top 5 (38% combined) — an open shelf where new products get seen.
**Brands**
**21 **▲rising
**Sellers**
**25**
**Top-5 brand share**
**55%**
Top 20: 99%
**Top-5 click share**
**38%**
Top 20: 80%
**Open market**
**39%**
- Perfashion20% - Kepblom12% - IBAKOM9% - LMYOVE7% - Shekavarld7% - GRAJTCIN5%
## **girls alien costume demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -35.0% search growth over the last 90 days.
30K20KSpike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Sep, Oct · busiest ÷ quietest = 172.1×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/girls-alien-costume/trend)
## **Top girls alien costume search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **girls alien costume**26K/yr-22.5%0.7% conv. - **alien costume girls**16K/yr-54.3%1.0% conv. - **inflatable alien costume kids**58K/yr-31.4%0.6% conv. - **blow up alien costume for kids**391/yr-75.0%0.0% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/girls-alien-costume/search-terms)
## **Top girls alien costume 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%3%$2K6%$4K9%$6K12%$8K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Kepblom Girls Shiny Metallic Mock Neck Unitard Long Sleeve Zipper Back One Piece Bodysuit Costume**Kepblom**$23.10**4.4★1,301 rev](https://www.amazon.com/dp/B07MHLH7WL) [2**Perfashion Alien Costume Kids Size 10-11 Silver Metallic Shorts Girls Dance Shiny Skirts Sparkly Skorts with Pockets**Perfashion**$22.48**4.5★154 rev](https://www.amazon.com/dp/B0CLY25Q6G) [3**Shekavarld Green Metallic Dresses for Girls Kids Holographic Party Dress Halloween Clothes 8 9 Years**Shekavarld**$25.41**4.3★111 rev](https://www.amazon.com/dp/B0D1VHPTJ5) [4**Girl Shiny Metallic Dress Toddler Sleeveless Holographic 80s Sparkly Dance Outfits Kids Alien Space Pleated Skirt Carnival Rave Twirl Swing Dress 90s Prom Skater Mini Dress Green 5-6 Years**IBAKOM**$25.07**4.4★55 rev](https://www.amazon.com/dp/B0D9H6WNNS) [5**GRAJTCIN Alien Costume for Kids Space Dress Silver Metallic Robot Outfit Girls Halloween Cosplay Adventure 4PCS (M Silver)**GRAJTCIN**$32.16**5.0★2 rev](https://www.amazon.com/dp/B0G5PTHTV6)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**YONGHS Outer Space Alien Outfits for Girls Metallic Dance Dress with Headband for Future World Party Colorful Silver 8 Years**YONGHS**$14.36**0 rev5mo ago](https://www.amazon.com/dp/B0GGR4CBVZ) [**GRAJTCIN Alien Costume for Kids Space Dress Silver Metallic Robot Outfit Girls Halloween Cosplay Adventure 4PCS (M Silver)**GRAJTCIN**$32.16**2 rev7mo ago](https://www.amazon.com/dp/B0G5PTHTV6) [**AGCOAH Kids Alien Costume 4PCS Silver Cosmic Galaxy Costume Girls Child Robot Outfit with Alien Glasses Halloween Cosplay S(4-5Y)**AGCOAH**$31.03**17 rev11mo ago](https://www.amazon.com/dp/B0FLX41VSD) [**LMYOVE Silver Girls Alien Party Costume for Kids Girls Halloween Birthday Space Themed Party Cosplay Alien Outfit(4-5Y)**LMYOVE**$31.43**6 rev1y ago](https://www.amazon.com/dp/B0F8MZQFJ2) [**yolsun Alien Costume for Girls Silver Metallic Dress Halloween Robot Outfit Cosplay (Silver Small)**yolsun**$32.71**12 rev1y ago](https://www.amazon.com/dp/B0F32RKS67)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**YONGHS Outer Space Alien Outfits for Girls Metallic Dance Dress with Headband for Future World Party Colorful Silver 8 Years**YONGHS**$14.36**0.0★**▲ 973%**](https://www.amazon.com/dp/B0GGR4CBVZ) [**Girl Shiny Metallic Dress Toddler Sleeveless Holographic 80s Sparkly Dance Outfits Kids Alien Space Pleated Skirt Carnival Rave Twirl Swing Dress 90s Prom Skater Mini Dress Hot Pink 3-4 Years**IBAKOM**$21.48**4.4★**▲ 929%**](https://www.amazon.com/dp/B0D9H74LY8) [**GRAJTCIN Alien Costume for Kids Space Dress Silver Metallic Robot Outfit Girls Halloween Cosplay Adventure 4PCS (M Silver)**GRAJTCIN**$32.16**5.0★**▲ 872%**](https://www.amazon.com/dp/B0G5PTHTV6) [**LMYOVE Girl Space Alien Costume Kids Halloween Zombies Cheerleader Dress Outfit for Girls 4PCS Set Cosplay**LMYOVE**$27.51**4.8★**▲ 774%**](https://www.amazon.com/dp/B0D4TQRQTM) [**nmuauycu Unisex Kids Aliens Onesie PajamasPolar Fleece Cosplay Animal Onesie Halloween Costume and Homewear**nmuauycu**$25.19**4.4★**▲ 689%**](https://www.amazon.com/dp/B0D2Y6CGS2)
**~~View all trending →~~**
## **What reviews say buyers love and hate about girls alien costume**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**21%
*“the fitment is perfect”*
**Advertised Vs Actual Product**16%
*“DOES THE JOB”*
**Quality-Overall**12%
*“Great quality, good battery life, and down right funny”*
**Ease Of Use**10%
*“so it truly made Halloween easier”*
**Inflation/Deflation**8%
*“Inflates quickly and easy to get on and off”*
**Material Quality**8%
*“material wise so far”*
**Fun/Entertainment Experience**5%
*“Made the night a lot of fun”*
**Comfort-Overall**5%
*“were fairly comfortable”*
**Durability**3%
*“The suits held up”*
**Color**3%
*“the outfit itself is pretty solid buy color”*
### **What buyers complain about **
**Strength**17%
*“made of very brittle plastic”*
**Size-Overall**17%
*“every time we tried Spirit or somewhere similar they were wayyy too big”*
**Thin**17%
*“very thin material”*
**Durability**12%
*“Glasses were broke”*
**Material Quality**8%
*“They material is thick rubbery plastic”*
**Brightness/Shine/Glow**6%
*“GLITTER A LITTLE REDUNDANT”*
**Adhesion/Stickiness**3%
*“on top of that they had some tacky glitter glue where it was broke on the hinge like they knew it broke”*
### **Top return reasons **
**Size-Overall**55%
**Length**4%
**Material Quality**4%
**Advertised Vs Actual Product**4%
**Product Condition**3%
**Functionality-Overall**3%
**Value For Money**2%
**Inflation/Deflation**2%
**Waist Fit**2%
**Shape/Style**2%
## **Common girls alien costume questions**
- **Is girls alien costume profitable to sell on Amazon United States?**
- The niche generates $67K/yr across 35 tracked products. 1 of 8 products launched in the last 360 days are still selling. 90-day search growth is -35.0%. Flapen's verdict: Skip it (44/100).
- **How competitive is the girls alien costume niche?**
- 21 brands and 25 sellers compete. The top 5 products take 38% of clicks and top 5 brands hold 55% of demand.
- **What do buyers complain about in girls alien costume?**
- Top complaints mined from reviews: Strength, Size-Overall, Thin. The return rate is 10.9% — above our launch gate.
- **When does demand for girls alien costume peak?**
- Demand peaks in Sep–Oct; the busiest month runs 172.1× the quietest.
- **What does it cost to enter the girls alien costume niche?**
- Listings span $10.33–$58.40; the average listing price is $26.77 (sweet spot $15–$100). The average incumbent carries 189 reviews — the moat a new listing must climb.
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