---
title: "Alien Costume — £103K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/toys-games/alien-costume"
last_updated: "2026-07-31T08:45:45.369Z"
locale: en
meta:
description: "Niche score 51/100 · £103K/yr market · 455K searches/yr · £15.89 avg price. Soft demand (-25.4% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 51/100 · £103K/yr market · 455K searches/yr · £15.89 avg price. Soft demand (-25.4% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Alien Costume — £103K/yr Amazon UK Niche (2026) - Flapen"
---
# **alien costume**
**Worth a look**
Shows a thin review moat (148 avg reviews), but soft demand (-25.4% this quarter) keeps it on the watch list.
Market size 25Growth 12Conversion 18Competition 78Returns 38Price range 68Avg price 77Brand share 78Review moat 93Quality gap 79
**Review moat**
**Great****147.88**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Competition**
**Great****37%**
top-5 click share — an open shelf
**Brand share**
**Great****57%**
top-5 brand share — no brand owns this niche
**Avg price**
**Great****£15.89**
avg listing price — sweet spot $15–$100
**Price range**
**Good****£5.75–£34.85**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Returns**
**Okay****4.0%**
return rate — above 5% kills the launch gate
**Market size**
**Okay****£103K**
£103K/yr · 455K searches
**Conversion**
**Bad****1.4%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Bad****-25.4%**
90-day search growth — must beat 0% to launch
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=uk&signal=no_dominant_brand "Top brand's click share < 20%") [** Low Review Barrier**](https://flapen.com/research/niches?market=uk&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United Kingdom niche tracking, alien costume is a £103K/yr Amazon United Kingdom market (455K searches/yr). The top 5 brands hold 57% of demand. Demand peaks in Oct–Nov. Verdict: Worth a look — 51/100.
Data updated Jul 29, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **alien costume market data**
- **Units sold / yr**
- **8K–10K**
- avg 100–250/product
- **Revenue / yr**
- **£127K–£159K**
- units × avg price
- **Conversion rate**
- **1.4%**
- **Avg BSR**
- **#1,711**
- **Page quality**
- **0%**
- **Prime**
- **67%**
- **Sponsored**
- **73%**
- **Out of stock**
- **16.8%**
- **Avg brand age**
- **31 months**
- **Avg seller age**
- **195 days**
## **Competition & brand share**
Clicks spread well past the top 5 (37% combined) — an open shelf where new products get seen.
**Brands**
**32 **▼falling
**Sellers**
**51**
**Top-5 brand share**
**57%**
Top 20: 90%
**Top-5 click share**
**37%**
Top 20: 74%
**Open market**
**38%**
- AYBUY16% - Morph14% - RANSUU13% - SHMIZZ7% - Carreuty7% - Alaxciax5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -25.4% search growth over the last 90 days.
70K50KSpike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Oct, Nov · busiest ÷ quietest = 25.9×
[**Open Trend **](https://flapen.com/research/uk/toys-games/alien-costume/trend)
## **Top alien costume search terms**
- **alien costume**166K/yr+1.1%1.0% conv. - **alien costume kids**87K/yr-65.9%1.1% conv. - **alien costume women**17K/yr+35.5%0.5% conv. - **kids alien costume**26K/yr-39.1%1.5% conv. - **alien fancy dress**7K/yr+72.6%0.7% conv. - **alien costume adults**16K/yr-45.9%1.2% conv. - **alien outfit**6K/yr+21.9%0.6% conv. - **inflatable alien costume**26K/yr-22.3%2.9% conv. - **alien inflatable costume**19K/yr-35.5%1.3% conv. - **alien costume men**6K/yr+35.5%0.4% conv. [**All search terms **](https://flapen.com/research/uk/toys-games/alien-costume/search-terms)
## **Top alien costume products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%4%£4K8%£8K12%£12K16%£16K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)5 products 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**RANSUU Onesie Costume Alien Onesie Jumpsuit Adult Pyjama Womens and Mens Animal Alien Sleepwear Christmas Carnival Halloween blue S**RANSUU**£27.37**4.3★26 rev](https://www.amazon.co.uk/dp/B0D6Y7VWKT) [2**Carreuty 3 Pcs Alien Costume Sets Alien Headband with Tutu Skite Gloves for Kids Ears Cute Costume Funny Headwear for Halloween Cosplay Parties & Photos**Carreuty**£10.09**4.2★18 rev](https://www.amazon.co.uk/dp/B0B3HMC85S) [3**AYBUY Alien Costume Alien Kidnapping Inflatable Costume T-Rex Blow up Fancy Dress for Adults Funny Ride-on Halloween Costumes for Halloween Cosplay Masquerade Party**AYBUY**£19.47**4.4★150 rev](https://www.amazon.co.uk/dp/B0DBVK56ZX) [4**Alien Kidnapping Inflatable Costume Spooktacular Creations Adult Halloween Christmas Funny Cosplay Party Festival Mask Prom (L 160-190cm)**SHMIZZ**£19.65**4.5★37 rev](https://www.amazon.co.uk/dp/B0G4PSMP57) [5**Morph Inflatable Costume Alien Inflatable Alien Costume Adult Aliens Costumes Adults Blow Up Costumes for Adults**Morph**£29.32**4.5★672 rev](https://www.amazon.co.uk/dp/B0CX5WDWHR)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Zaldita Womens Metallic Shiny Space Alien Costumes Glitter Sequin Dance Leotard Astronaut Jumpsuit Clubwear Blue S**Zaldita**£18.27**0 rev2mo ago](https://www.amazon.co.uk/dp/B0H2948Y1P) [**Rswnyirn Girls Metallic Alien Costume Rhinestones Sleeveless Ruffle Crop Tops and Mini Skirt Headband Pace Themed Party Green 5-6 Years**Rswnyirn**£10.55**0 rev3mo ago](https://www.amazon.co.uk/dp/B0GVNJRPB5) [**4Pcs Three-Eyed Alien Costume Set Alien Fancy Dress Kit with Three-Eyed Headband Matching Gloves Tutu Skirt Striped Socks Funny Aliens Accessories for Cosplay Party Dress Up Day Halloween**Dazzroi**£9.11**2 rev4mo ago](https://www.amazon.co.uk/dp/B0GR5QMY3H) [**Galaxy Shirt Womens 3D Galaxy Print Tops Round Neck Glitter T-Shirts Funny Alien Tops Universe Star Space Carnival Costume Party Festive Blouses Starry Sky Outfit Fashion Casual T-Shirt navy k L**Generisch**£5.75**0 rev6mo ago](https://www.amazon.co.uk/dp/B0GFK4KSFG) [**MUNSKT 6 PCS Alien Costume Accessories Alien Headband with Glasses Gloves Earrings Glasses Stickers Glitter Set Glitter for Halloween Women Cosplay Carnival Dress up**MUNSKT**£7.45**1 rev6mo ago](https://www.amazon.co.uk/dp/B0GF8DPH9P)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Zaldita Womens Metallic Shiny Space Alien Costumes Glitter Sequin Dance Leotard Astronaut Jumpsuit Clubwear Blue S**Zaldita**£18.27**0.0★**▲ 535%**](https://www.amazon.co.uk/dp/B0H2948Y1P) [**Miutii Womens Alien Astronaut Cosplay Costume Tulle Skirt Leotard Alien Dress Jumpsuit Halloween Fancy Dress Up Blue S**Miutii**£10.72**0.0★**▲ 531%**](https://www.amazon.co.uk/dp/B0DJSZWH4W) [**Galaxy Shirt Womens 3D Galaxy Print Tops Round Neck Glitter T-Shirts Funny Alien Tops Universe Star Space Carnival Costume Party Festive Blouses Starry Sky Outfit Fashion Casual T-Shirt navy k L**Generisch**£5.75**0.0★**▲ 527%**](https://www.amazon.co.uk/dp/B0GFK4KSFG) [**RANSUU Onesie Costume Alien Onesie Jumpsuit Adult Pyjama Womens and Mens Animal Alien Sleepwear Christmas Carnival Halloween blue S**RANSUU**£27.37**4.3★**▲ 526%**](https://www.amazon.co.uk/dp/B0D6Y7VWKT) [**Girls Tutu Skirt Little Girls LED Colorful Luminous Kids Star Sequin Ballet Skirt Princess Sparkling Tutu Fancy Fluffy Ballet Dance Costume for 3-8 Years Kids (Dark Green)**QOTSTEOS**£6.33**4.2★**▲ 452%**](https://www.amazon.co.uk/dp/B09JSWGCD4)
**~~View all trending →~~**
## **What buyers say about alien costume**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**15%
*“Good quality”*
**Size-Overall**14%
*“Good fit”*
**Advertised Vs Actual Product**12%
*“Does the job”*
**Ease Of Use**10%
*“Simple to use”*
**Fun/Entertainment Experience**8%
*“Great fun”*
**Efficiency**4%
*“it works perfect”*
**Inflation/Deflation**4%
*“Great fun easy to inflate”*
**Stretchability/Expandability/Elasticity**4%
*“The elastic band of the skirt goes a long way”*
**Comfort-Overall**4%
*“Comfort is reasonable for short spells”*
**Value For Money**4%
*“good value for money”*
### **What buyers complain about **
**Size-Overall**18%
*“Poor sizing of the skirt”*
**Thickness**13%
*“quite thin material”*
**Battery Inclusion**10%
*“Didnt come with batteries even though it said it did”*
**Durability**8%
*“Just goes down really fast”*
**Battery Life**5%
*“The batteries run out quite quickly”*
**Material Quality**5%
*“Material does feel a bit thin”*
**Inflation/Deflation**5%
*“Wish it had stayed inflated for a bit longer”*
**Functionality-Overall**5%
*“Works but not for long”*
**Quality-Overall**3%
*“Cheap”*
**Stitch/Finish/Polish**3%
*“Unfortunately one of the gloves has a hole where it hasn't been stitched properly”*
### **Top return reasons **
**Size-Overall**68%
**Quality-Overall**6%
**Inflation/Deflation**4%
**Advertised Vs Actual Product**3%
**Comfort-Overall**2%
**Value For Money**2%
**Functionality-Overall**2%
**Defective Material/Parts**2%
**Durability**2%
**Color**2%
## **Common questions**
- **Is alien costume profitable to sell on Amazon United Kingdom?**
- The niche generates £103K/yr across 48 tracked products. 0 of 18 products launched in the last 360 days are still selling. 90-day search growth is -25.4%. Flapen's verdict: Worth a look (51/100).
- **How competitive is the alien costume niche?**
- 32 brands and 51 sellers compete. The top 5 products take 37% of clicks and top 5 brands hold 57% of demand.
- **What do buyers complain about in alien costume?**
- Top complaints mined from reviews: Size-Overall, Thickness, Battery Inclusion. The return rate is 4.0%.
- **When does demand for alien costume peak?**
- Demand peaks in Oct–Nov; the busiest month runs 25.9× the quietest.
- **What does it cost to enter the alien costume niche?**
- Listings span £5.75–£34.85; the average listing price is £15.89 (sweet spot $15–$100). The average incumbent carries 148 reviews — the moat a new listing must climb.
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