Harley Quinn Costume Kids
Skip itSoft demand (-86.2% this quarter) — this niche doesn't clear our bar today.
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Avg price
Great£16.34avg listing price — sweet spot $15–$100
Returns
Great2.0%return rate — above 5% kills the launch gate
Review moat
Good548.73avg incumbent reviews — the moat a new listing must climb
Price range
Good£5.43–£33.67cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Bad81%top-5 click share — a locked-up shelf
Conversion
Bad1.2%search→purchase rate — share of searches ending in a sale
Brand share
Bad94%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
Is harley quinn costume kids profitable on Amazon?
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
harley quinn costume kids market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- 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: brands, sellers & click 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%)
harley quinn costume kids demand & seasonality
Weekly Amazon search volume, last 104 weeks — -86.2% search growth over the last 90 days.Peak months: Oct, Nov · busiest ÷ quietest = 215.2×
Top harley quinn costume kids search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- harley quinn costume kids145K/yr
- kids harley quinn costume15K/yr
- harley quinn costume kids 11-127K/yr
- harlequin costume kids9K/yr
- harley quinn kids costume5K/yr
- girls harley quinn costume6K/yr
Top harley quinn costume kids products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 11 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Rubies Official Harley Quinn Suicide Squad Inflatable Baseball Bat Lightweight Prop for Kids & Teens
Rubies£5.434.3★4,157 rev
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£12.503.6★4 rev
Kitimi Costumes Kids Fancy Dress Carnival Halloween Villain Costume Include Jacket T-shirt Shorts Choker Bat and Glove for Halloween Carnival Cosplay(120)
Kitimi£18.044.3★5 rev
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£12.643.6★4 rev
Ficlwigkis Halloween Costume Women Girls Kids Fancy Dress with Jacket T-Shirt Shorts Gloves Necklace Belt Wig Tattoo (Kids 150)
Ficlwigkis£22.824.2★5 rev
Newest
by launch dateUxClishe 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£12.504 rev
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£12.644 rev
JrnSvp Girls Harley Quinn Childrens Sizes 11 Piece Set 120 cm/130 cm/140 cm Polyester Lightweight Authentic Accessories Halloween Carnival Costume Parties
JrnSvp£33.676 rev
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£20.516 rev
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£15.576 rev
Trending
90-day click momentum
Girls Harley Quinn Vest Crop Top and Hot Pants Set Red Blue 5-6 years
Gum & Berries£9.984.7★
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£12.643.6★
Rubies Official Harley Quinn Suicide Squad Inflatable Baseball Bat Lightweight Prop for Kids & Teens
Rubies£5.434.3★
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£12.503.6★
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£15.574.3★
What reviews say buyers love and hate about harley quinn costume kids
What buyers praise and complain about, mined from review topics.What buyers love
“Fitted well”
“It comes with a bunch of probably the best quality kids tattoos Ive ever seen”
“Just how they look”
“Value for money”
What buyers complain about
“Inflateable not very big”
“Because this was packed air locked when Im packed all the colour had come off when unfolding”
“Not as advertised”
“Not good at all very disappointed it kept goin down”
Top return reasons
Common harley quinn costume kids 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.
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