womens halloween costume adult
Skip itWeak search conversion (0.2%) — this niche doesn't clear our bar today.
Quality gap
Incredible3.7★avg incumbent rating — lower means beatable quality
Avg price
Great£15.96avg listing price — sweet spot $15–$100
Review moat
Good990.89avg incumbent reviews — the moat a new listing must climb
Price range
Good£4.96–£31.86cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Okay4.4%return rate — above 5% kills the launch gate
Brand share
Bad93%top-5 brand share — brand-locked demand
Growth
Bad-23.7%90-day search growth — must beat 0% to launch
Competition
Bad90%top-5 click share — a locked-up shelf
Market size
Bad£22K£22K/yr · 728K searches
Conversion
Bad0.2%search→purchase rate — share of searches ending in a sale
According to Flapen's Amazon United Kingdom niche tracking, womens halloween costume adult is a £22K/yr Amazon United Kingdom market (728K searches/yr). The top 5 brands hold 93% of demand. Demand peaks in Oct–Nov. Verdict: Skip it — 29/100.
Data updated Jul 23, 2026 · scored weekly · How we score niches
womens halloween costume adult market data
- Units sold / yr
- 3K–3K
- avg 0–100/product
- Revenue / yr
- £40K–£48K
- units × avg price
- Conversion rate
- 0.2%
- Avg BSR
- #596
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 67%
- Out of stock
- 16.9%
- Avg brand age
- 38 months
- Avg seller age
- 199 days
Competition & brand share
The top 5 products capture 90% of clicks — a locked-up shelf that new listings rarely crack.Brands
8 rising
Sellers
44
Top-5 brand share
93%
Top 20: 100%
Top-5 click share
90%
Top 20: 100%
Open market
4%
- RSLOVE37%
- Smiffys34%
- HENBRANDT13%
- SEAUR5%
- Fortunezone3%
- DELIMALI3%
- Open — no brand owns it (2 brands, 4%)
Demand & seasonality
Weekly Amazon search volume, last 90 weeks — -23.7% search growth over the last 90 days.Peak months: Oct, Nov · busiest ÷ quietest = 377.4×
Top womens halloween costume adult search terms
- costume women46K/yr
- womens halloween costume adult667K/yr
- halloween costumes plus size14K/yr
Top womens halloween costume adult 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 9 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
RSLOVE Women Lingerie Sets Costume - Sexy Maid Outfits Sleepwear Dress for Halloween Cosplay Black Medium
RSLOVE£14.734.2★218 rev
Smiffys Grease Pink Ladies Jacket for Women Pink Jacket with Embroidered Logo Officially Licensed Ideal for Matching Group Outfits Fancy Dress and Playful Music-Themed Events Halloween
Smiffys£12.304.2★3,768 rev
HENBRANDT Adult Womens Roman Lady Mini Dress with Shawl and Headpiece Short White Toga Fancy Dress Costume Ancient History Dress Up Outfit One Size Ladies Fancy Dress Costume
HENBRANDT£8.794.0★290 rev
SEAUR Womens Faux Leather Lingerie Mini Dress PU V Neck Backless Babydoll Dress Wet Look Halloween Costumes Party Nightwear with Thongs Pink M
SEAUR£19.742.5★9 rev
Fortunezone Princess Leia Costume Adult Halloween Cosplay White Long Dress with Belt
Fortunezone£31.864.1★18 rev
Newest
by launch dateSEAUR Womens Faux Leather Lingerie Mini Dress PU V Neck Backless Babydoll Dress Wet Look Halloween Costumes Party Nightwear with Thongs Pink M
SEAUR£19.749 rev
SGFNXB Halloween Costumes Adult Women 5 PCS Witch Costumes Set Witch Cape Hat Gloves Stockings and Broom World Book Day Costume for Halloween Christmas Cosplay and Themed Parties for 14+
SGFNXB£23.7912 rev
Fortunezone Princess Leia Costume Adult Halloween Cosplay White Long Dress with Belt
Fortunezone£31.8618 rev
RSLOVE Women Lingerie Sets Costume - Sexy Maid Outfits Sleepwear Dress for Halloween Cosplay Black Medium
RSLOVE£14.73218 rev
URAQT Tulle Tutu Skirts for Women LED Light Up Tutu Skirts Sequins Stars Elastic Tutu Adult Teen Skirt Ballet Dance Festival Outfit Halloween Party Costume # Black
URAQT£4.96824 rev
Trending
90-day click momentumSEAUR Womens Faux Leather Lingerie Mini Dress PU V Neck Backless Babydoll Dress Wet Look Halloween Costumes Party Nightwear with Thongs Pink M
SEAUR£19.742.5★
Fortunezone Princess Leia Costume Adult Halloween Cosplay White Long Dress with Belt
Fortunezone£31.864.1★
Smiffys Grease Pink Ladies Jacket for Women Pink Jacket with Embroidered Logo Officially Licensed Ideal for Matching Group Outfits Fancy Dress and Playful Music-Themed Events Halloween
Smiffys£12.304.2★
RSLOVE Women Lingerie Sets Costume - Sexy Maid Outfits Sleepwear Dress for Halloween Cosplay Black Medium
RSLOVE£14.734.2★
HENBRANDT Adult Womens Roman Lady Mini Dress with Shawl and Headpiece Short White Toga Fancy Dress Costume Ancient History Dress Up Outfit One Size Ladies Fancy Dress Costume
HENBRANDT£8.794.0★
What buyers say about womens halloween costume adult
What buyers praise and complain about, mined from review topics.What buyers love
“Perfect and as described”
What buyers complain about
“Very thin,”
Top return reasons
Common questions
- Is womens halloween costume adult profitable to sell on Amazon United Kingdom?
- The niche generates £22K/yr across 9 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -23.7%. Flapen's verdict: Skip it (29/100).
- How competitive is the womens halloween costume adult niche?
- 8 brands and 44 sellers compete. The top 5 products take 90% of clicks and top 5 brands hold 93% of demand.
- What do buyers complain about in womens halloween costume adult?
- Top complaints mined from reviews: Thin. The return rate is 4.4%.
- When does demand for womens halloween costume adult peak?
- Demand peaks in Oct–Nov; the busiest month runs 377.4× the quietest.
- What does it cost to enter the womens halloween costume adult niche?
- Listings span £4.96–£31.86; the average listing price is £15.96 (sweet spot $15–$100). The average incumbent carries 991 reviews — the moat a new listing must climb.