Is halloween costumes for girls profitable to sell on Amazon United Kingdom?

The niche generates £88K/yr across 43 tracked products. 0 of 7 products launched in the last 360 days are still selling. 90-day search growth is +48.2%. Flapen's verdict: Worth a look (55/100).

How competitive is the halloween costumes for girls niche?

27 brands and 64 sellers compete. The top 5 products take 40% of clicks and top 5 brands hold 59% of demand.

What do buyers complain about in halloween costumes for girls?

Top complaints mined from reviews: Size-Overall, Quality-Overall, Durability. The return rate is 3.3%.

When does demand for halloween costumes for girls peak?

Demand peaks in Sep–Oct–Nov; the busiest month runs 816.0× the quietest.

What does it cost to enter the halloween costumes for girls niche?

Listings span £7.29–£30.04; the average listing price is £16.29 (sweet spot $15–$100). The average incumbent carries 877 reviews — the moat a new listing must climb.

halloween costumes for girls

Worth a look

Shows a sweet-spot price point ($16.29 avg), but weak search conversion (0.2%) keeps it on the watch list.

Avg price

Great£16.29

avg listing price — sweet spot $15–$100

Brand share

Great59%

top-5 brand share — no brand owns this niche

Competition

Good40%

top-5 click share — leaders hold, buyers still browse

Quality gap

Good4.3★

avg incumbent rating — lower means beatable quality

Growth

Good+48.2%

90-day search growth — must beat 0% to launch

Review moat

Good877.16

avg incumbent reviews — the moat a new listing must climb

Price range

Good£7.29–£30.04

cheapest to priciest tracked listing — scored on the share inside $15–$100

Returns

Okay3.3%

return rate — above 5% kills the launch gate

Market size

Bad£88K

£88K/yr · 2.3M searches

Conversion

Bad0.2%

search→purchase rate — share of searches ending in a sale

According to Flapen's Amazon United Kingdom niche tracking, halloween costumes for girls is a £88K/yr Amazon United Kingdom market (2.3M searches/yr). The top 5 brands hold 59% of demand. Demand peaks in Sep–Oct–Nov. Verdict: Worth a look — 55/100.

Data updated Jul 29, 2026 · scored weekly · How we score niches

halloween costumes for girls market data

Units sold / yr: 15K–20K; avg 0–100/product
Revenue / yr: £244K–£326K; units × avg price
Conversion rate: 0.2%
Avg BSR: #1,355
Page quality: 0%
Prime: 86%
Sponsored: 70%
Out of stock: 16.3%
Avg brand age: 34 months
Avg seller age: 188 days

Competition & brand share

The top 5 products take 40% of clicks — established leaders, but buyers still shop beyond them.

Brands

27 rising

Sellers

Top-5 brand share

59%

Top 20: 94%

Top-5 click share

40%

Top 20: 75%

Open market

38%

amscan25%
DiULi17%
Smiffys8%
Morphsuits4%
Atorcher4%
WWAYBEI3%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +48.2% search growth over the last 90 days.

Peak months: Sep, Oct, Nov · busiest ÷ quietest = 816.0×

Open Trend

Top halloween costumes for girls search terms

halloween costumes for girls225K/yr +107.0%0.1% conv.
girls halloween costume393K/yr +74.8%0.0% conv.
kids halloween costumes girls134K/yr +228.7%0.1% conv.
boys halloween costume386K/yr +49.9%0.0% conv.
halloween outfits for girls58K/yr +162.3%0.0% conv.
halloween costumes boys202K/yr -10.2%0.0% conv.
halloween costumes girls60K/yr +80.0%0.1% conv.
childs halloween costumes28K/yr +83.8%0.2% conv.
girls halloween costume 11-1257K/yr +77.0%0.2% conv.
halloween costumes for kids boys42K/yr +62.2%0.0% conv.

All search terms

Top halloween costumes for girls 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.

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

DiULi Girls Costume Yellow Joy Princess Dress Role Play Masquerade Sleeveless Dress Suitable for Halloween Party Birthday Dress Up with Wig(Yellow#150)

DiULi£7.534.4★66 rev

Smiffys Zombie School Girl Costume Grey with Skirt Jacket Mock Shirt & Tie Halloween Child Fancy Dress Zombie Dress Up Costumes

Smiffys£11.794.5★2,077 rev

amscan 9905069 Childs Iridescent Spider Web Girl Fancy Dress Halloween Costume Age 10-12 Years

amscan£17.504.3★1,712 rev

amscan 9905067 Childs Iridescent Spider Web Girl Fancy Dress Halloween Costume Age 6-8 Years

amscan£17.134.3★1,712 rev

Atorcher Girls Halloween Costume Black and Yellow Polyester Top and Pants Set for Cosplay Events and Parties

Atorcher£22.754.1★39 rev

Newest

by launch date

Kids Performance Outfit Sequin Costume for Boys Girls Jacket Pants Gloves Sunglasses Hat Sets Stage Party Halloween Cosplay Dance Wear Show 80s Disco Outfit Pop Star Costume

Generic£14.6013 rev

2mo ago

Atorcher Girls Halloween Costume Black and Yellow Polyester Top and Pants Set for Cosplay Events and Parties

Atorcher£22.7539 rev

7mo ago

WWAYBEI Kids Girls Scary Halloween Clown Costume Tulle Dress Knife Socks Gloves Hairpin Sets Pennywise Costume Fancy Dress Halloween Party Cosplay Outfit (Black White 8-9 Years)

WWAYBEI£9.8624 rev

10mo ago

WWAYBEI Kids Girls Scary Halloween Clown Costume Tulle Dress Knife Socks Gloves Hairpin Sets Pennywise Costume Fancy Dress Halloween Party Cosplay Outfit (Black White 10-12 Years)

WWAYBEI£9.7524 rev

10mo ago

KORURACLUB Bunny Girl Cosplay Anime Bunny Bodysuit Halloween Cosplay Lingerie for Women Animal Costumes Cosplay Events (Black Cat L)

KORURACLUB£22.557 rev

11mo ago

What buyers say about halloween costumes for girls

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall26%

“Decent quality”

Size-Overall19%

“Size correct as well”

Value For Money17%

“Good value”

Durability4%

“Lovely costume and durable too”

Advertised Vs Actual Product4%

“Better than expected”

Fun/Entertainment Experience3%

“Quality fun and fits great”

Storage Capacity3%

“Plenty space inside for an adult or child”

Gifting Purpose2%

“Perfect gift”

Efficiency2%

“it works perfect”

Collectibles2%

“Grandson really enjoyed this collection for his 5th Birthday”

What buyers complain about

Size-Overall14%

“size up”

Quality-Overall12%

“Poor quality”

Durability8%

“Within 2 minutes 4 gems fell out of the wand”

Functionality-Overall8%

“Unfortunately it's not working again”

Heating7%

“Probably just a bad batch and the heat etc”

Material Quality6%

“Material cheap looking the hand hook is poor quality”

Stitch/Finish/Polish3%

“Seams frayed, poorly made”

Allergies3%

“Grandson said was itchy wouldn't wear it”

Inflation/Deflation3%

“Wish it had stayed inflated for a bit longer”

Upholstery/Fabric Quality2%

“Poor fabric”

Top return reasons

Size-Overall70%

Quality-Overall9%

Defective Material/Parts3%

Advertised Vs Actual Product3%

Product Condition2%

Material Quality2%

Stitch/Finish/Polish1%

Value For Money1%

Functionality-Overall1%

Strap/String Quality1%

Common questions

Is halloween costumes for girls profitable to sell on Amazon United Kingdom?: The niche generates £88K/yr across 43 tracked products. 0 of 7 products launched in the last 360 days are still selling. 90-day search growth is +48.2%. Flapen's verdict: Worth a look (55/100).
How competitive is the halloween costumes for girls niche?: 27 brands and 64 sellers compete. The top 5 products take 40% of clicks and top 5 brands hold 59% of demand.
What do buyers complain about in halloween costumes for girls?: Top complaints mined from reviews: Size-Overall, Quality-Overall, Durability. The return rate is 3.3%.
When does demand for halloween costumes for girls peak?: Demand peaks in Sep–Oct–Nov; the busiest month runs 816.0× the quietest.
What does it cost to enter the halloween costumes for girls niche?: Listings span £7.29–£30.04; the average listing price is £16.29 (sweet spot $15–$100). The average incumbent carries 877 reviews — the moat a new listing must climb.