---
title: "Rat Costume — £54K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/fashion/rat-costume"
last_updated: "2026-07-31T13:43:20.272Z"
locale: en
meta:
description: "Niche score 47/100 · £54K/yr market · 121K searches/yr · £16.21 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 47/100 · £54K/yr market · 121K searches/yr · £16.21 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Rat Costume — £54K/yr Amazon UK Niche (2026) - Flapen"
---
# **rat costume**
**Skip it**
Soft demand (-52.5% this quarter) — this niche doesn't clear our bar today.
Market size 14Growth 0Conversion 35Competition 64Returns 54Price range 64Avg price 78Brand share 66Review moat 97Quality gap 76
**Review moat**
**Incredible****63.44**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Great****£16.21**
avg listing price — sweet spot $15–$100
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Good****66%**
top-5 brand share — brands hold most of the demand
**Competition**
**Good****47%**
top-5 click share — leaders hold, buyers still browse
**Price range**
**Good****£4.55–£33.84**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Returns**
**Good****2.9%**
return rate — above 5% kills the launch gate
**Conversion**
**Okay****2.8%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Bad****£54K**
£54K/yr · 121K searches
**Growth**
**Bad****-52.5%**
90-day search growth — must beat 0% to launch
**Signals**[** 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, rat costume is a £54K/yr Amazon United Kingdom market (121K searches/yr). The top 5 brands hold 66% of demand. Demand peaks in Mar–Oct–Nov. Verdict: Skip it — 47/100.
Data updated Jul 23, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **rat costume market data**
- **Units sold / yr**
- **3K–3K**
- avg 0–100/product
- **Revenue / yr**
- **£41K–£49K**
- units × avg price
- **Conversion rate**
- **2.8%**
- **Avg BSR**
- **#1,333**
- **Page quality**
- **0%**
- **Prime**
- **91%**
- **Sponsored**
- **88%**
- **Out of stock**
- **11.5%**
- **Avg brand age**
- **38 months**
- **Avg seller age**
- **194 days**
## **Competition & brand share**
The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**21 **▲rising
**Sellers**
**39**
**Top-5 brand share**
**66%**
Top 20: 99%
**Top-5 click share**
**47%**
Top 20: 86%
**Open market**
**30%**
- HEWERON38% - Yeffute8% - Mcdslrgo7% - SKHAOVS7% - HENBRANDT6% - TSHAOUN5%
## **Demand & seasonality**
Weekly Amazon search volume, last 86 weeks — -52.5% search growth over the last 90 days.
15K10KSpike '25Prime Day '25Spike '26Prime Day '26 seasonDecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Mar, Oct, Nov · busiest ÷ quietest = 12.4×
[**Open Trend **](https://flapen.com/research/uk/fashion/rat-costume/trend)
## **Top rat costume search terms**
- **rat costume**29K/yr-0.6%1.5% conv. - **mouse costume**26K/yr-44.5%1.9% conv. - **ratatouille costume**31K/yr-63.3%1.5% conv. - **mouse costume kids**17K/yr-73.8%3.5% conv. - **rat costume kids**4K/yr-57.1%3.1% conv. - **rat costume adult**6K/yr-40.0%2.4% conv. - **mouse costume adult**8K/yr-80.7%2.4% conv. [**All search terms **](https://flapen.com/research/uk/fashion/rat-costume/search-terms)
## **Top rat 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%£2K8%£4K12%£6K16%£9K1101001K 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**HEWERON Mouse Onesie Adult Rat Costume Halloween Animals Cosplay Pajamas Cartoon Warm Sleepwear Women Men**HEWERON**£24.65**4.7★9 rev](https://www.amazon.co.uk/dp/B0F9DBCW8X) [2**HEWERON Mouse Onesie Adult Rat Costume Halloween Animals Cosplay Pajamas Cartoon Warm Sleepwear Women Men**HEWERON**£24.71**4.7★9 rev](https://www.amazon.co.uk/dp/B0F9DMMF54) [3**Yeffute Inflatable Mouse Costume for Adult Blow up Mouse Costume Funny Halloween Party Cosplay Costume Suit (Grey)**Yeffute**£24.72**4.4★101 rev](https://www.amazon.co.uk/dp/B0F1TQ33L8) [4**HEWERON Mouse Onesie Adult Rat Costume Halloween Animals Cosplay Pajamas Cartoon Warm Sleepwear Women Men**HEWERON**£24.29**4.7★9 rev](https://www.amazon.co.uk/dp/B0F9DMKZ88) [5**Mcdslrgo Unisex-Adult Christmas Onesie Pajamas Halloween Cosplay Costume**Mcdslrgo**£19.62**4.4★87 rev](https://www.amazon.co.uk/dp/B075MK84WL)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**HeHeGe Mouse Costume Set Grey Mouse Ears Tail Nose and Bow Tie Cartoon Animal World Book Day Cosplay Accessory Halloween Dress Up**HeHeGe**£8.05**0 rev2mo ago](https://www.amazon.co.uk/dp/B0GTCPHHCX) [**EDLMKM 5 Pcs Rat Theme Makeup Costume Animal Mouse Costume Accessory Set Grey Animal Nose Ears Headband Bow Tie Tail Tutu Skirt for Christmas Carnival World Book Day Cosplay Dress Party Supplies**EDLMKM**£8.69**1 rev8mo ago](https://www.amazon.co.uk/dp/B0FZGX4T88) [**AOOWU Mouse Costume Set for Kids 7PCS Animal Costume Set Tutu Skirt with Mouse Headband Tail Bow Tie Nose Gloves Mouse Animal Fancy Dress Costume for Halloween Theme Party Cosplay**AOOWU**£7.59**13 rev11mo ago](https://www.amazon.co.uk/dp/B0FN7ZLLJS) [**Xryhze Inflatable Mouse Costume Adult Size Air Blow up Rat Costume for Halloween Cosplay Party Dress Full Body Outfit (Grey)**Xryhze**£22.55**4 rev1y ago](https://www.amazon.co.uk/dp/B0FHB54P68) [**iZoeL Chef Mouse Costume Couples Adults & Women Fancy Dress with Apron Chef Hat Wooden Spoon Mouse Ears Headband Tail Nose Bow Tie Rat Outfit**iZoeL**£14.17**4 rev1y ago](https://www.amazon.co.uk/dp/B0FDQB7RKY)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**HeHeGe Mouse Costume Set Grey Mouse Ears Tail Nose and Bow Tie Cartoon Animal World Book Day Cosplay Accessory Halloween Dress Up**HeHeGe**£8.05**0.0★**▲ 306%**](https://www.amazon.co.uk/dp/B0GTCPHHCX) [**HEWERON Mouse Onesie Adult Rat Costume Halloween Animals Cosplay Pajamas Cartoon Warm Sleepwear Women Men**HEWERON**£24.65**4.7★**▲ 251%**](https://www.amazon.co.uk/dp/B0F9DBCW8X) [**HEWERON Mouse Onesie Adult Rat Costume Halloween Animals Cosplay Pajamas Cartoon Warm Sleepwear Women Men**HEWERON**£24.29**4.7★**▲ 174%**](https://www.amazon.co.uk/dp/B0F9DMKZ88) [**Funidelia | Rat Costume for men and women Animals - Costume for adults accessory fancy dress & props for Halloween carnival & parties - Size L - XL - Grey/Silver**Funidelia**£33.84**4.5★**▲ 168%**](https://www.amazon.co.uk/dp/B0C7D1FXZQ) [**HEWERON Mouse Onesie Adult Rat Costume Halloween Animals Cosplay Pajamas Cartoon Warm Sleepwear Women Men**HEWERON**£24.71**4.7★**▲ 127%**](https://www.amazon.co.uk/dp/B0F9DMMF54)
**~~View all trending →~~**
## **What buyers say about rat costume**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Fun/Entertainment Experience**17%
*“This is a super fun”*
**Size-Overall**15%
*“Size was fine”*
**Quality-Overall**15%
*“Great quality and great price”*
**Inflation/Deflation**9%
*“This inflatable mouse costume is great, it comes with its own air pump and battery pack and once inflated looks absolutely amazing”*
**Value For Money**8%
*“Great value for money”*
**Advertised Vs Actual Product**7%
*“like in pictures”*
**Shape/Style**4%
*“held the shape really well”*
**Ease Of Use**3%
*“it was straightforward to use”*
**Material Quality**2%
*“The material feels lightweight yet durable”*
**Zipper Quality**2%
*“Fastens with a zip at the back easier with help”*
### **What buyers complain about **
**Quality-Overall**33%
*“Quality isnt great, thin”*
**Size-Overall**23%
*“Sizes big”*
**Value For Money**5%
*“I'm not sure if its worth the money tbh”*
**Advertised Vs Actual Product**3%
*“Dont go off the photos”*
**Noise Level**2%
*“Does make noise when fan is on”*
**Weight Heavy**2%
*“It is quite bulky once it's on so probably not ideal for tight spaces”*
### **Top return reasons **
**Size-Overall**62%
**Quality-Overall**14%
**Defective Material/Parts**4%
**Functionality-Overall**4%
**Advertised Vs Actual Product**3%
**Stretchability/Expandability/Elasticity**2%
**Product Condition**2%
**Thigh Fit**1%
**Length**1%
**Compatibility-Overall**1%
## **Common questions**
- **Is rat costume profitable to sell on Amazon United Kingdom?**
- The niche generates £54K/yr across 32 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is -52.5%. Flapen's verdict: Skip it (47/100).
- **How competitive is the rat costume niche?**
- 21 brands and 39 sellers compete. The top 5 products take 47% of clicks and top 5 brands hold 66% of demand.
- **What do buyers complain about in rat costume?**
- Top complaints mined from reviews: Quality-Overall, Size-Overall, Value For Money. The return rate is 2.9%.
- **When does demand for rat costume peak?**
- Demand peaks in Mar–Oct–Nov; the busiest month runs 12.4× the quietest.
- **What does it cost to enter the rat costume niche?**
- Listings span £4.55–£33.84; the average listing price is £16.21 (sweet spot $15–$100). The average incumbent carries 63 reviews — the moat a new listing must climb.
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