---
title: "King Costume Kids — £58K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/toys-games/king-costume-kids"
last_updated: "2026-07-31T19:08:04.103Z"
locale: en
meta:
description: "Niche score 56/100 · £58K/yr market · 80K searches/yr. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 56/100 · £58K/yr market · 80K searches/yr. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "King Costume Kids — £58K/yr Amazon UK Niche (2026) - Flapen"
---
# **king costume kids**
**Worth a look**
Shows beatable incumbent ratings (4.0★), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 14Growth 8Conversion 61Competition 82Returns 40Price range 80Avg price 64Brand share 91Review moat 88Quality gap 93
**Quality gap**
**Great****4.0★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Great****45%**
top-5 brand share — no brand owns this niche
**Review moat**
**Great****235.55**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Great****33%**
top-5 click share — an open shelf
**Price range**
**Great****£5.45–£55.00**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Avg price**
**Good****£13.64**
avg listing price — sweet spot $15–$100
**Conversion**
**Good****5.3%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Okay****3.8%**
return rate — above 5% kills the launch gate
**Market size**
**Bad****£58K**
£58K/yr · 80K searches
**Growth**
**Bad****-34.0%**
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%")
According to Flapen's Amazon United Kingdom niche tracking, king costume kids is a £58K/yr Amazon United Kingdom market (80K searches/yr). The top 5 brands hold 45% of demand. Demand peaks in Mar–Nov–Dec. Verdict: Worth a look — 56/100.
Data updated Jul 29, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **king costume kids market data**
- **Units sold / yr**
- **3K–3K**
- avg 0–100/product
- **Revenue / yr**
- **£34K–£41K**
- units × avg price
- **Conversion rate**
- **5.3%**
- **Avg BSR**
- **#1,230**
- **Page quality**
- **0%**
- **Prime**
- **98%**
- **Sponsored**
- **83%**
- **Out of stock**
- **9.7%**
- **Avg brand age**
- **43 months**
- **Avg seller age**
- **201 days**
## **Competition & brand share**
Clicks spread well past the top 5 (33% combined) — an open shelf where new products get seen.
**Brands**
**34 **▲rising
**Sellers**
**66**
**Top-5 brand share**
**45%**
Top 20: 90%
**Top-5 click share**
**33%**
Top 20: 76%
**Open market**
**49%**
- TSHAOUN11% - AOOWU9% - Smiffys9% - jerbro9% - HPMAISON7% - Wicked Costumes6%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -34.0% search growth over the last 90 days.
10K6KSpike '24Holiday '24Spike '25Prime Day '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Mar, Nov, Dec · busiest ÷ quietest = 7.0×
[**Open Trend **](https://flapen.com/research/uk/toys-games/king-costume-kids/trend)
## **Top king costume kids search terms**
- **king costume kids**28K/yr-46.6%3.2% conv. - **king costume**23K/yr-20.0%2.4% conv. - **kids king costume**11K/yr-28.9%3.8% conv. - **king costume adult**8K/yr-33.3%3.2% conv. - **king outfit**5K/yr-27.1%2.0% conv. - **king of hearts costume**5K/yr-21.9%2.5% conv. [**All search terms **](https://flapen.com/research/uk/toys-games/king-costume-kids/search-terms)
## **Top king 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%3%£2K6%£3K9%£5K12%£7K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**TSHAOUN King Costume Set Prince Cloak and Prince Crown 2 Pcs Set for Princes Role Play Halloween Princes Costume Nativity Costumes Stage Performance One Size 80cm (Red)**TSHAOUN**£6.66**4.3★604 rev](https://www.amazon.co.uk/dp/B0BRCP2PV6) [2**HPMAISON Set 3 King Fancy Dress Crown + 42CM Sceptre + 90CM Red Cape Set Prince Costume Tiara Royal Outfits Headwear Cosplay Birthday Party Halloween Role Play**HPMAISON**£12.20**4.2★35 rev](https://www.amazon.co.uk/dp/B0BY2NF984) [3**Wicked Costumes Boys Medieval King Fancy Dress Costume Royal Prince Knight Outfit for World Book Day School Plays Halloween & Parties - Large (8-10 Years)**Wicked Costumes**£12.78**4.5★688 rev](https://www.amazon.co.uk/dp/B00LMYAZGM) [4**AOOWU Kids King Costume with Cape and Crown Prince & Queen Cape Cloak Coat with Detachable Crown Unisex Cloak Medieval Costume for Halloween Christmas World Book Day Birthday Party One Size (80cm)**AOOWU**£5.45**4.1★512 rev](https://www.amazon.co.uk/dp/B0C6KCM6J5) [5**Smiffys King Arthur Medieval Costume Red with Tunic Cape & Crown Boys Fancy Dress Child Dress Up Costumes**Smiffys**£13.02**4.6★2,412 rev](https://www.amazon.co.uk/dp/B00SBYWGB8)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**1 PC Royal Crown Chain Brooch Golden Crown Lapel Pin with Double Chain for Birthday Role Play Party**xoqoiuo**£11.07**4 rev2mo ago](https://www.amazon.co.uk/dp/B0GHG1X2HV) [**Binmiza King Costume Set 90cm King Queen Costume Set Red Cow Pattern Cloak with Golden Cloth Crown for Nativity Halloween Stage Performance**Binmiza**£5.97**1 rev3mo ago](https://www.amazon.co.uk/dp/B0GX18Z2RR) [**GSrenyu 3 Pcs King Costume Set for Kids**GSrenyu**£9.84**19 rev6mo ago](https://www.amazon.co.uk/dp/B0GK669MQN) [**Adults King Costume Set 3Pcs Royal King Queen Costume Red Cow Pattern Cloak 120cm with Tie + Adjustable Crown with Hook-and-Loop Closure + Elastic White Gloves Halloween Party Cosplay Stage Outfit**WanderGo**£8.36**6 rev6mo ago](https://www.amazon.co.uk/dp/B0GF1TFGQH) [**Enjoyaa 2 Pcs King Costume Set - Wise Man Nativity King Costume with Crown & Cape Role Play Robe Christmas Nativity Play Halloween Coronation & Birthday Dress Up (red)**Enjoyaa**£7.13**1 rev7mo ago](https://www.amazon.co.uk/dp/B0GD7GRPMY)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Binmiza King Costume Set 90cm King Queen Costume Set Red Cow Pattern Cloak with Golden Cloth Crown for Nativity Halloween Stage Performance**Binmiza**£5.97**5.0★**▲ 361%**](https://www.amazon.co.uk/dp/B0GX18Z2RR) [**GSrenyu 3 Pcs King Costume Set for Kids**GSrenyu**£9.84**3.9★**▲ 360%**](https://www.amazon.co.uk/dp/B0GK669MQN) [**Regenboog King Costume for Men and Women - Metal Crown Adult Green Cape Scepter Brooch Queen Outfit Halloween Lord Farquaad XL**Regenboog**£22.59**4.5★**▲ 290%**](https://www.amazon.co.uk/dp/B0CQ2D9HYZ) [**Enjoyaa 2 Pcs King Costume Set - Wise Man Nativity King Costume with Crown & Cape Role Play Robe Christmas Nativity Play Halloween Coronation & Birthday Dress Up (red)**Enjoyaa**£7.13**1.0★**▲ 240%**](https://www.amazon.co.uk/dp/B0GD7GRPMY) [**jerbro 3pcs Royal King Robe Queen Velvet Coat Costume + King Queen Crown + Scepter for Women Men Halloween Adult Theme Party Theatre Fancy Dress Cosplay Carnival Fancy Dress (Blue 49.2in/125cm)**jerbro**£11.33**3.9★**▲ 142%**](https://www.amazon.co.uk/dp/B0C2HR9YJS)
**~~View all trending →~~**
## **What buyers say about king costume kids**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**49%
*“Good quality and the description was accurate”*
**Size-Overall**13%
*“perfect fit”*
**Value For Money**11%
*“Good value for money”*
**Advertised Vs Actual Product**3%
*“When it has arrived it is nicer than the photo”*
**Ease Of Use**2%
*“Nice to use once”*
**Fun/Entertainment Experience**2%
*“Great for imaginative play”*
**Shape/Style**2%
*“Adaptable for different body shapes”*
**Gifting Purpose**2%
*“Great present or fancy dres”*
**Strength**2%
*“Sturdy and perfect fit”*
**Design-Overall**1%
*“And well designed”*
### **What buyers complain about **
**Size-Overall**31%
*“Doesn't fit an average adult man”*
**Quality-Overall**22%
*“Not the greatest of quality the gloves are close to the body scrubbing glove you get in the pound shop”*
**Value For Money**13%
*“other sellers have it cheaper”*
**Material Quality**9%
*“Material wasnt great”*
**Durability**6%
*“Really bad, the crown broke instantly as soon as it came out of the box and the cape broke within 15 minutes of being worn”*
**Strength**3%
*“The septor was flimsy”*
**Advertised Vs Actual Product**3%
*“It doesn't show from the front because of this”*
### **Top return reasons **
**Size-Overall**60%
**Quality-Overall**19%
**Adhesion/Stickiness**2%
**Material Quality**2%
**Defective Material/Parts**2%
**Thin**2%
**Advertised Vs Actual Product**2%
**Durability**2%
**Color**1%
**Stitch/Finish/Polish**1%
## **Common questions**
- **Is king costume kids profitable to sell on Amazon United Kingdom?**
- The niche generates £58K/yr across 47 tracked products. 0 of 12 products launched in the last 360 days are still selling. 90-day search growth is -34.0%. Flapen's verdict: Worth a look (56/100).
- **How competitive is the king costume kids niche?**
- 34 brands and 66 sellers compete. The top 5 products take 33% of clicks and top 5 brands hold 45% of demand.
- **What do buyers complain about in king costume kids?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Value For Money. The return rate is 3.8%.
- **When does demand for king costume kids peak?**
- Demand peaks in Mar–Nov–Dec; the busiest month runs 7.0× the quietest.
- **What does it cost to enter the king costume kids niche?**
- Listings span £5.45–£55.00; the average listing price is £13.64 (sweet spot $15–$100). The average incumbent carries 236 reviews — the moat a new listing must climb.
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