knight costume kids
Skip itA small market ($31K/yr) — this niche doesn't clear our bar today.
Price range
Great£9.57–£41.82cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Great£17.55avg listing price — sweet spot $15–$100
Review moat
Great397.68avg incumbent reviews — the moat a new listing must climb
Competition
Good43%top-5 click share — leaders hold, buyers still browse
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Returns
Okay3.1%return rate — above 5% kills the launch gate
Brand share
Okay79%top-5 brand share — brands hold most of the demand
Conversion
Bad1.3%search→purchase rate — share of searches ending in a sale
Market size
Bad£31K£31K/yr · 139K searches
Growth
Bad-33.8%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, knight costume kids is a £31K/yr Amazon United Kingdom market (139K searches/yr). The top 5 brands hold 79% of demand. Verdict: Skip it — 43/100.
Data updated Jul 29, 2026 · scored weekly · How we score niches
knight costume kids market data
- Units sold / yr
- 2K–3K
- avg 0–100/product
- Revenue / yr
- £35K–£44K
- units × avg price
- Conversion rate
- 1.3%
- Avg BSR
- #1,312
- Page quality
- 0%
- Prime
- 87%
- Sponsored
- 50%
- Out of stock
- 10.2%
- Avg brand age
- 41 months
- Avg seller age
- 198 days
Competition & brand share
The top 5 products take 43% of clicks — established leaders, but buyers still shop beyond them.Brands
14 flat
Sellers
40
Top-5 brand share
79%
Top 20: 100%
Top-5 click share
43%
Top 20: 82%
Open market
16%
- Wicked Costumes45%
- Rubies11%
- Morph9%
- Spooktacular Creations7%
- Generic7%
- Smiffys5%
- Open — no brand owns it (8 brands, 16%)
Demand
Weekly Amazon search volume, last 21 weeks — -33.8% search growth over the last 90 days.Top knight costume kids search terms
- knight costume kids71K/yr
- knight costume51K/yr
- kids knight costume17K/yr
Top knight 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Wicked Costumes Boys Medieval Knight Fancy Dress Costume Warrior Crusader Outfit for World Book Day School Plays Halloween & Parties - Medium 5-7 years
Wicked Costumes£10.654.4★1,083 rev
Wicked Costumes Boys Deluxe Knight Fancy Dress Costume Medieval Warrior Crusader Armour Outfit for Kids- Large (8-10 years)
Wicked Costumes£12.284.4★459 rev
Wicked Costumes Boys Knight Costume Medieval Warrior Fancy Dress Outfit for World Book Day & School Events - Large (8-10 Years)
Wicked Costumes£10.224.2★249 rev
Spooktacular Creations Kids Knight Costume Deluxe Set for Boys Halloween Party Dress Up and Cosplay Medium (8-10 yrs)
Spooktacular Creations£21.544.6★1,517 rev
Rubies Official King Arthur Childs Costume Kids Fancy Dress Halloween Size Age 7-8
Rubies£12.964.6★567 rev
Newest
by launch date
Adults Medieval Crusader Knight Costume English St George Fancy Dress with Tunic Red Cape Headpiece & Belt King Arthur Knight Outfit for Parties & Events
Generic£23.310 rev
Morph Medieval Knight Costume For Boys Knight Costume Kids Halloween Costumes For Boys Warrior Costumes Kids XL
Morph£19.4874 rev
Boys Medieval Tunic Childrens Cosplay T-Shirts Costume Halloween Renaissance Viking Warrior Knight Tops Kids Medieval Costume Boys Solid Color Personality Shirts Comfortable
Generic£12.961 rev
WIKITOT Roman Costume Kids Halloween Costumes for Boys Aged 5-13(M)
WIKITOT£12.92162 rev
Alipis Kids Knight Armor Play Set Helmet Chest Plate Sword Axe Shield & Arm Guards Pretend Role-Play Medieval Knight Costume for Boys & Girls
Alipis£29.128 rev
Trending
90-day click momentumAdults Medieval Crusader Knight Costume English St George Fancy Dress with Tunic Red Cape Headpiece & Belt King Arthur Knight Outfit for Parties & Events
Generic£23.310.0★
Boys Medieval Tunic Childrens Cosplay T-Shirts Costume Halloween Renaissance Viking Warrior Knight Tops Kids Medieval Costume Boys Solid Color Personality Shirts Comfortable
Generic£12.965.0★
Wicked Costumes Boys Knight Costume Medieval Warrior Fancy Dress Outfit for World Book Day & School Events - Medium (57 Years)
Wicked Costumes£9.574.2★
Wicked Costumes Boys Medieval Knight Fancy Dress Costume Warrior Crusader Outfit for World Book Day School Plays Halloween & Parties - X-Large (11-13 Years)
Wicked Costumes£11.144.4★
Wicked Costumes Boys Deluxe Knight Fancy Dress Costume Medieval Warrior Crusader Armour Outfit for Kids- Large (8-10 years)
Wicked Costumes£12.284.4★
What buyers say about knight costume kids
What buyers praise and complain about, mined from review topics.What buyers love
“Good quality, sizing is true to size”
“Perfect fit”
“Great Value”
“as the picture”
“Fun for kids”
“comfort comes up great”
“Sturdy set”
“Good material”
“drys quickly for the next wearing just fabulous Maria”
What buyers complain about
“the helmet seems very small”
“Doesnt include sword and shield which isnt immediately clear from the photos / description”
“fell apart within a few hours”
“rubbish”
“Bit disappointed for the price”
“Will get wrinkle”
“a bit plastic”
Top return reasons
Common questions
- Is knight costume kids profitable to sell on Amazon United Kingdom?
- The niche generates £31K/yr across 38 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is -33.8%. Flapen's verdict: Skip it (43/100).
- How competitive is the knight costume kids niche?
- 14 brands and 40 sellers compete. The top 5 products take 43% of clicks and top 5 brands hold 79% of demand.
- What do buyers complain about in knight costume kids?
- Top complaints mined from reviews: Size-Overall, Advertised Vs Actual Product, Durability. The return rate is 3.1%.
- What does it cost to enter the knight costume kids niche?
- Listings span £9.57–£41.82; the average listing price is £17.55 (sweet spot $15–$100). The average incumbent carries 398 reviews — the moat a new listing must climb.