harry potter costume adult
Skip itSoft demand (-81.9% this quarter) — this niche doesn't clear our bar today.
Review moat
Great208.97avg incumbent reviews — the moat a new listing must climb
Avg price
Great£17.31avg listing price — sweet spot $15–$100
Brand share
Great58%top-5 brand share — no brand owns this niche
Price range
Good£6.90–£31.60cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Good47%top-5 click share — leaders hold, buyers still browse
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Returns
Okay4.0%return rate — above 5% kills the launch gate
Conversion
Okay2.8%search→purchase rate — share of searches ending in a sale
Market size
Bad£62K£62K/yr · 129K searches
Growth
Bad-81.9%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, harry potter costume adult is a £62K/yr Amazon United Kingdom market (129K searches/yr). The top 5 brands hold 58% of demand. Demand peaks in Mar–Oct–Nov. Verdict: Skip it — 45/100.
Data updated Jul 29, 2026 · scored weekly · How we score niches
harry potter costume adult market data
- Units sold / yr
- 3K–4K
- avg 0–100/product
- Revenue / yr
- £52K–£69K
- units × avg price
- Conversion rate
- 2.8%
- Avg BSR
- #1,234
- Page quality
- 0%
- Prime
- 88%
- Sponsored
- 71%
- Out of stock
- 25.4%
- Avg brand age
- 46 months
- Avg seller age
- 187 days
Competition & brand share
The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them.Brands
20 falling
Sellers
47
Top-5 brand share
58%
Top 20: 100%
Top-5 click share
47%
Top 20: 87%
Open market
35%
- DABAOOU13%
- Rubies13%
- REDSTAR12%
- Harry Potter10%
- Kitimi9%
- Kodepro8%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -81.9% search growth over the last 90 days.Peak months: Mar, Oct, Nov · busiest ÷ quietest = 11.5×
Top harry potter costume adult search terms
- harry potter costume adult45K/yr
- harry potter fancy dress adults10K/yr
- harry potter adult costume11K/yr
- adult harry potter costume12K/yr
- harry potter outfit adult6K/yr
- harry potter robe adult5K/yr
- harry potter cloak adult5K/yr
- hermione granger costume adult15K/yr
- gryffindor robe adult5K/yr
- harry potter costume adult women8K/yr
Top harry potter 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
DABAOOU 7pcs Wizard Costume Accessories Set Halloween Fancy Dress Outfit
DABAOOU£11.744.7★26 rev
5pc Adult Wizard Costume - Wizard Accessories With Black Hooded Cape Red and Yellow Scarf Magic Wand Red and Yellow Tie Black Glasses Fancy Dress for World Book Day or Halloween Costumes for Men
REDSTAR£14.494.4★483 rev
Rubies Official Deluxe Harry Potter Robe Adults Fancy Dress Unisex Costume Medium Halloween
Rubies£17.734.1★918 rev
17 Pcs Adults Wizard Costume Accessories Set with Hooded Cape Wizard Hat Scarf Tie Glasses Wand Necklace Tattoo Sticker Harry Wizard Cosplay Outfit Fancy Dress for Halloween Party World Book Day
Kodepro£15.854.3★29 rev
Kitimi Costume Robe Adult 5PCS Wizard Costume Magic School Uniform Wizard Robe With Wand Tie Scarf Wizard Fancy Dress Cosplay Costume for Men and Women Halloween World Book Day Carnival Party
Kitimi£20.424.5★32 rev
Newest
by launch date
Webeasy 5PCS Magic Hooded Cloak with Wand Scarf Glasses Badge Wizard Costume Set for Unisex Adults
Webeasy£19.864 rev
UAVAUI Wizard Costume Set 8 PCS Wizard Robe with Magic Hat Stickers Necklace Spectacles Magic Wand and Scarf Halloween Costume Set for School Activities Party World Book Day Role-Playing
UAVAUI£10.349 rev
DABAOOU 7pcs Wizard Costume Accessories Set Halloween Fancy Dress Outfit
DABAOOU£11.7426 rev
Wizard Costume Accessories 8 Pcs Cosplay Accessories Set with Magic Cloak Magic Wand Hat Scarf Tie Necklace Glasses Tattoo Sticker Fancy Dress Set for Kids and Adult Halloween Party World Book Day
Wieerda£10.8911 rev
Harry Potter Gryffindor Unisex Black Hooded Bathrobe | Cosy Fleece Long Sleeve Loungewear for Relaxation | Movie House Merch Merch - Large
Harry Potter£28.2310 rev
Trending
90-day click momentum
Harry Potter Dressing Gown Adult Fleece Hooded Dressing Gowns For Women Or Men (M Black)
Harry Potter£17.834.7★
Harry Potter Womens Wearable Blanket Hoodie | Adults Gray Hooded Pullover with Hogwarts Graphic All Over Print | One Size Sherpa Lined Loungewear with Pockets | Classic Wizard Movie Merchandise Gift
Harry Potter£31.604.8★
Oerphh Wizard Costume Accessories Set Hooded Black Cape with Tie Glasses World Book Day Costumes (Red 125cm)
Oerphh£7.214.4★
Harry Potter Gryffindor Unisex Black Hooded Bathrobe | Cosy Fleece Long Sleeve Loungewear for Relaxation | Movie House Merch Merch - Large
Harry Potter£28.235.0★
Harry Potter Gryffindor Unisex Black Hooded Bathrobe | Cosy Fleece Long Sleeve Loungewear for Relaxation | Movie House Merch Merch - XX-Large
Harry Potter£29.265.0★
What buyers say about harry potter costume adult
What buyers praise and complain about, mined from review topics.What buyers love
“All so well made”
“Great value for money”
“Fit beautifully”
“complete the look”
“The colours and overall design look fantastic and really bring the whole costume together”
“Got this for my disabled nephew for Christmas as soon as he opened the present he put the Magicians outfit on”
“Amazing costume, all items arrived as described and looked brilliant for a fancy dress party”
“£10.99, voucher £10.44 at time of review, makes this a full of fun costume for a teen upwards”
“The colours are bright and bold, and they feel ok for basic costume props”
“The quality of the items are fairly strong a durable”
What buyers complain about
“It is very, very long”
“Cheap looking”
“Very thin material”
“Just that the stickers did not stick to the skin”
“The wand and glasses are cheap plastic”
“Only minor thing is the necklace makes your neck green which is expected as its not real”
“unlikely to last much longer than that”
“Cheap and poor value for money”
“though it felt a little flimsy”
Top return reasons
Common questions
- Is harry potter costume adult profitable to sell on Amazon United Kingdom?
- The niche generates £62K/yr across 34 tracked products. 0 of 8 products launched in the last 360 days are still selling. 90-day search growth is -81.9%. Flapen's verdict: Skip it (45/100).
- How competitive is the harry potter costume adult niche?
- 20 brands and 47 sellers compete. The top 5 products take 47% of clicks and top 5 brands hold 58% of demand.
- What do buyers complain about in harry potter costume adult?
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Thickness. The return rate is 4.0%.
- When does demand for harry potter costume adult peak?
- Demand peaks in Mar–Oct–Nov; the busiest month runs 11.5× the quietest.
- What does it cost to enter the harry potter costume adult niche?
- Listings span £6.90–£31.60; the average listing price is £17.31 (sweet spot $15–$100). The average incumbent carries 209 reviews — the moat a new listing must climb.