---
title: "Harley Quinn Costume Kids — £36K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/everything-else/harley-quinn-costume-kids"
last_updated: "2026-07-31T06:33:33.293Z"
locale: en
meta:
description: "Niche score 33/100 · £36K/yr market · 187K searches/yr · £16.34 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 33/100 · £36K/yr market · 187K searches/yr · £16.34 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Harley Quinn Costume Kids — £36K/yr Amazon UK Niche (2026) - Flapen"
---
# **harley quinn costume kids**
**Skip it**
Soft demand (-86.2% this quarter) — this niche doesn't clear our bar today.
Market size 9Growth 0Conversion 14Competition 16Returns 76Price range 66Avg price 78Brand share 14Review moat 74Quality gap 84
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Great****£16.34**
avg listing price — sweet spot $15–$100
**Returns**
**Great****2.0%**
return rate — above 5% kills the launch gate
**Review moat**
**Good****548.73**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Good****£5.43–£33.67**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Bad****81%**
top-5 click share — a locked-up shelf
**Conversion**
**Bad****1.2%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Bad****94%**
top-5 brand share — brand-locked demand
**Market size**
**Bad****£36K**
£36K/yr · 187K searches
**Growth**
**Bad****-86.2%**
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, harley quinn costume kids is a £36K/yr Amazon United Kingdom market (187K searches/yr). The top 5 brands hold 94% of demand. Demand peaks in Oct–Nov. Verdict: Skip it — 33/100.
Data updated Jul 23, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **harley quinn costume kids market data**
- **Units sold / yr**
- **2K–2K**
- avg 0–100/product
- **Revenue / yr**
- **£25K–£33K**
- units × avg price
- **Conversion rate**
- **1.2%**
- **Avg BSR**
- **#2,819**
- **Page quality**
- **0%**
- **Prime**
- **82%**
- **Sponsored**
- **64%**
- **Out of stock**
- **14.6%**
- **Avg brand age**
- **31 months**
- **Avg seller age**
- **202 days**
## **Competition & brand share**
The top 5 products capture 81% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**8 **▲rising
**Sellers**
**24**
**Top-5 brand share**
**94%**
Top 20: 100%
**Top-5 click share**
**81%**
Top 20: 100%
**Open market**
**3%**
- UxClishe31% - Kitimi28% - Rubies25% - Ficlwigkis6% - KAZGVN5% - JrnSvp2% - Open — no brand owns it (2 brands, 3%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -86.2% search growth over the last 90 days.
100K60KSpike '24Spike '25Prime Day '25Spike '26Prime Day '26 seasonSepDecMarJunAugNovMarMay
Peak months: Oct, Nov · busiest ÷ quietest = 215.2×
[**Open Trend **](https://flapen.com/research/uk/everything-else/harley-quinn-costume-kids/trend)
## **Top harley quinn costume kids search terms**
- **harley quinn costume kids**145K/yr-89.5%0.9% conv. - **kids harley quinn costume**15K/yr-64.9%1.0% conv. - **harley quinn costume kids 11-12**7K/yr-85.8%0.6% conv. - **harlequin costume kids**9K/yr-73.4%0.7% conv. - **harley quinn kids costume**5K/yr-56.2%0.0% conv. - **girls harley quinn costume**6K/yr-77.9%1.6% conv. [**All search terms **](https://flapen.com/research/uk/everything-else/harley-quinn-costume-kids/search-terms)
## **Top harley quinn costume kids 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%10%£4K20%£7K30%£11K40%£14K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 11 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Rubies Official Harley Quinn Suicide Squad Inflatable Baseball Bat Lightweight Prop for Kids & Teens**Rubies**£5.43**4.3★4,157 rev](https://www.amazon.co.uk/dp/B06XH3XLC3) [2**UxClishe 6 Pcs Costume Set Costume Outfit Cosplay Fancy Dress with Jacket T-shirt Shorts Glove Necklace Temporary Tattoos Costume Kit for World Book Day Halloween Carnival Party**UxClishe**£12.50**3.6★4 rev](https://www.amazon.co.uk/dp/B0GC5QMW9B) [3**Kitimi Costumes Kids Fancy Dress Carnival Halloween Villain Costume Include Jacket T-shirt Shorts Choker Bat and Glove for Halloween Carnival Cosplay(120)**Kitimi**£18.04**4.3★5 rev](https://www.amazon.co.uk/dp/B0FC27K69X) [4**UxClishe 6 Pcs Costume Set Costume Outfit Cosplay Fancy Dress with Jacket T-shirt Shorts Glove Necklace Temporary Tattoos Costume Kit for World Book Day Halloween Carnival Party**UxClishe**£12.64**3.6★4 rev](https://www.amazon.co.uk/dp/B0GC55DKNH) [5**Ficlwigkis Halloween Costume Women Girls Kids Fancy Dress with Jacket T-Shirt Shorts Gloves Necklace Belt Wig Tattoo (Kids 150)**Ficlwigkis**£22.82**4.2★5 rev](https://www.amazon.co.uk/dp/B0FDFK5J3C)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**UxClishe 6 Pcs Costume Set Costume Outfit Cosplay Fancy Dress with Jacket T-shirt Shorts Glove Necklace Temporary Tattoos Costume Kit for World Book Day Halloween Carnival Party**UxClishe**£12.50**4 rev7mo ago](https://www.amazon.co.uk/dp/B0GC5QMW9B) [**UxClishe 6 Pcs Costume Set Costume Outfit Cosplay Fancy Dress with Jacket T-shirt Shorts Glove Necklace Temporary Tattoos Costume Kit for World Book Day Halloween Carnival Party**UxClishe**£12.64**4 rev7mo ago](https://www.amazon.co.uk/dp/B0GC55DKNH) [**JrnSvp Girls Harley Quinn Childrens Sizes 11 Piece Set 120 cm/130 cm/140 cm Polyester Lightweight Authentic Accessories Halloween Carnival Costume Parties**JrnSvp**£33.67**6 rev10mo ago](https://www.amazon.co.uk/dp/B0FHQDG4B1) [**KAZGVN Harley Costume Women Halloween Costumes Womens Fancy Dress Costumes This is a Complete Harley Set Villain Costume Used for Cosplay Halloween For Use by Those Aged 15 and Above (120)**KAZGVN**£20.51**6 rev11mo ago](https://www.amazon.co.uk/dp/B0FNM3TKDW) [**Kitimi Costumes for Kids Girls- Villain Halloween Fancy Dress Outfits Set Carnival Cosplay Costume Kit Include Jacket T-Shirt Shorts Gloves Wig Tattoo Baseball Bat for Theme Party Children 150**Kitimi**£15.57**6 rev11mo ago](https://www.amazon.co.uk/dp/B0FL7PV1FP)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Girls Harley Quinn Vest Crop Top and Hot Pants Set Red Blue 5-6 years**Gum & Berries**£9.98**4.7★**▲ 523%**](https://www.amazon.co.uk/dp/B0DHL9HSC4) [**UxClishe 6 Pcs Costume Set Costume Outfit Cosplay Fancy Dress with Jacket T-shirt Shorts Glove Necklace Temporary Tattoos Costume Kit for World Book Day Halloween Carnival Party**UxClishe**£12.64**3.6★**▲ 170%**](https://www.amazon.co.uk/dp/B0GC55DKNH) [**Rubies Official Harley Quinn Suicide Squad Inflatable Baseball Bat Lightweight Prop for Kids & Teens**Rubies**£5.43**4.3★**▲ 129%**](https://www.amazon.co.uk/dp/B06XH3XLC3) [**UxClishe 6 Pcs Costume Set Costume Outfit Cosplay Fancy Dress with Jacket T-shirt Shorts Glove Necklace Temporary Tattoos Costume Kit for World Book Day Halloween Carnival Party**UxClishe**£12.50**3.6★**▲ 114%**](https://www.amazon.co.uk/dp/B0GC5QMW9B) [**Kitimi Costumes for Kids Girls- Villain Halloween Fancy Dress Outfits Set Carnival Cosplay Costume Kit Include Jacket T-Shirt Shorts Gloves Wig Tattoo Baseball Bat for Theme Party Children 150**Kitimi**£15.57**4.3★**— 4%**](https://www.amazon.co.uk/dp/B0FL7PV1FP)
**~~View all trending →~~**
## **What buyers say about harley quinn costume kids**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**50%
*“Fitted well”*
**Quality-Overall**25%
*“It comes with a bunch of probably the best quality kids tattoos Ive ever seen”*
**Advertised Vs Actual Product**8%
*“Just how they look”*
**Value For Money**8%
*“Value for money”*
### **What buyers complain about **
**Size-Overall**25%
*“Inflateable not very big”*
**Color**25%
*“Because this was packed air locked when Im packed all the colour had come off when unfolding”*
**Advertised Vs Actual Product**25%
*“Not as advertised”*
**Quality-Overall**13%
*“Not good at all very disappointed it kept goin down”*
### **Top return reasons **
**Size-Overall**79%
**Color**11%
**Quality-Overall**4%
**Water Resistance**3%
**Material Quality**3%
**Advertised Vs Actual Product**3%
**Value For Money**3%
**Defective Material/Parts**1%
## **Common questions**
- **Is harley quinn costume kids profitable to sell on Amazon United Kingdom?**
- The niche generates £36K/yr across 11 tracked products. 0 of 6 products launched in the last 360 days are still selling. 90-day search growth is -86.2%. Flapen's verdict: Skip it (33/100).
- **How competitive is the harley quinn costume kids niche?**
- 8 brands and 24 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 94% of demand.
- **What do buyers complain about in harley quinn costume kids?**
- Top complaints mined from reviews: Size-Overall, Color, Advertised Vs Actual Product. The return rate is 2.0%.
- **When does demand for harley quinn costume kids peak?**
- Demand peaks in Oct–Nov; the busiest month runs 215.2× the quietest.
- **What does it cost to enter the harley quinn costume kids niche?**
- Listings span £5.43–£33.67; the average listing price is £16.34 (sweet spot $15–$100). The average incumbent carries 549 reviews — the moat a new listing must climb.
## **Related niches in Everything Else**
- 32 [**dreamland heated throw**](https://flapen.com/research/uk/everything-else/dreamland-heated-throw)£0/yr-78.0%**Skip it**- 32 [**brain licker**](https://flapen.com/research/uk/everything-else/brain-licker)£8K/yr-23.4%**Skip it**- 36 [**taylor swift stickers**](https://flapen.com/research/uk/everything-else/taylor-swift-stickers)£9K/yr-21.5%**Skip it**- 28 [**lakeland heated throw**](https://flapen.com/research/uk/everything-else/lakeland-heated-throw)£0/yr-85.4%**Skip it**- 39 [**essentiale forte**](https://flapen.com/research/uk/everything-else/essentiale-forte)£35K/yr-35.8%**Skip it**- 39 [**metallica merchandise**](https://flapen.com/research/uk/everything-else/metallica-merchandise)£23K/yr+98.3%**Skip it**[**All Everything Else niches **](https://flapen.com/research/uk/everything-else)