world book day costumes for girls
Skip itA small market ($0/yr) — this niche doesn't clear our bar today.
Review moat
Incredible79.9avg incumbent reviews — the moat a new listing must climb
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Returns
Good2.5%return rate — above 5% kills the launch gate
Avg price
Okay£11.86avg listing price — sweet spot $15–$100
Price range
Okay£5.98–£23.54cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Okay83%top-5 brand share — brands hold most of the demand
Competition
Bad80%top-5 click share — a locked-up shelf
Market size
Bad£0£0/yr · 2.4M searches
Growth
Bad-99.8%90-day search growth — must beat 0% to launch
Conversion
Bad0.0%search→purchase rate — share of searches ending in a sale
According to Flapen's Amazon United Kingdom niche tracking, world book day costumes for girls is a £0/yr Amazon United Kingdom market (2.4M searches/yr). The top 5 brands hold 83% of demand. Demand peaks in Feb–Mar. Verdict: Skip it — 29/100.
Data updated Jul 29, 2026 · scored weekly · How we score niches
world book day costumes for girls market data
- Units sold / yr
- 8K–10K
- avg 0–100/product
- Revenue / yr
- £95K–£119K
- units × avg price
- Conversion rate
- 0.0%
- Avg BSR
- #1,044
- Page quality
- 0%
- Prime
- 60%
- Sponsored
- 60%
- Out of stock
- 9.9%
- Avg brand age
- 40 months
- Avg seller age
- 195 days
Competition & brand share
The top 5 products capture 80% of clicks — a locked-up shelf that new listings rarely crack.Brands
9 rising
Sellers
27
Top-5 brand share
83%
Top 20: 100%
Top-5 click share
80%
Top 20: 100%
Open market
12%
- A2Z 4 Kids30%
- Joozmui26%
- Vagile15%
- I LOVE FANCY DRESS6%
- Disguise5%
- DiULi5%
- Open — no brand owns it (3 brands, 12%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -99.8% search growth over the last 90 days.Peak months: Feb, Mar · busiest ÷ quietest = 987.1×
Top world book day costumes for girls search terms
- world book day costumes for girls1.3M/yr
- world book day costumes363K/yr
- costumes for world book day193K/yr
- book day costumes kids67K/yr
- book characters costumes for girls24K/yr
- world book day costume98K/yr
- book costumes for kids13K/yr
- kids world book day costumes39K/yr
- kids world book day costumes girls19K/yr
- world book day costumes girl13K/yr
Top world book day 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.
All 10 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
A2Z Kids Zebra Costume Hooded - E.Soft Zebra 11-12
A2Z 4 Kids£15.054.4★101 rev
Joozmui World Book Day Costumes for Boys World Book Day Costumes for Girls Costume Kids Book Character Costumes Kids World Book Day Costumes World Book Day Costume (M)
Joozmui£17.780.0★0 rev
Vagile World Book Day Boys T Shirt Camp Half-Blood Shirt Costume Outfit Kids Apparel Orange
Vagile£5.980.0★0 rev
Girls Dorothy Style Costume with Dog in Basket Blue Gingham Dress Outfit with Matching Hair Ties and Plush Grey Dog Kansas Storybook World Book Day Fancy Dress
I LOVE FANCY DRESS£23.544.2★389 rev
Disney Lilo & Stitch Disguise Stitch Fancy costume Child Unisex Movie
Disguise£11.854.6★119 rev
Newest
by launch dateVagile World Book Day Boys T Shirt Camp Half-Blood Shirt Costume Outfit Kids Apparel Orange
Vagile£5.980 rev
Vagile World Book Day Boys T Shirt Camp Half-Blood Shirt Costume Outfit Kids Apparel Orange
Vagile£5.990 rev
Joozmui World Book Day Costumes for Boys World Book Day Costumes for Girls Costume Kids Book Character Costumes Kids World Book Day Costumes World Book Day Costume (M)
Joozmui£17.780 rev
DiULi 4 PCS Yellow Halloween Costume Accessories Set Cosplay Fun Party Costume Cute Costume World Book Day Childrens Costume Including Hat Two Eyes Steampunk Goggles Gloves Strap Clips
DiULi£7.9451 rev
9 Pcs Ladybird Costume Kids Spotty Tutu for Girls Fancy Dress Animal costume Kids with Accessories Party Outfit Performance Costume Sets Halloween World Book Day Costumes for Girls Cosplay
Xerteam£9.0950 rev
Trending
90-day click momentumVagile World Book Day Boys T Shirt Camp Half-Blood Shirt Costume Outfit Kids Apparel Orange
Vagile£5.980.0★
Vagile World Book Day Boys T Shirt Camp Half-Blood Shirt Costume Outfit Kids Apparel Orange
Vagile£5.990.0★
A2Z Kids Zebra Costume Hooded - E.Soft Zebra 11-12
A2Z 4 Kids£15.054.4★
DiULi 4 PCS Yellow Halloween Costume Accessories Set Cosplay Fun Party Costume Cute Costume World Book Day Childrens Costume Including Hat Two Eyes Steampunk Goggles Gloves Strap Clips
DiULi£7.944.1★
Joozmui World Book Day Costumes for Boys World Book Day Costumes for Girls Costume Kids Book Character Costumes Kids World Book Day Costumes World Book Day Costume (M)
Joozmui£17.780.0★
What buyers say about world book day costumes for girls
What buyers praise and complain about, mined from review topics.What buyers love
“Size is ok”
“Excellent quality”
“Exactly as described”
“Great material”
“Good value for money”
What buyers complain about
“Gloves were huge”
Top return reasons
Common questions
- Is world book day costumes for girls profitable to sell on Amazon United Kingdom?
- The niche generates £0/yr across 10 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is -99.8%. Flapen's verdict: Skip it (29/100).
- How competitive is the world book day costumes for girls niche?
- 9 brands and 27 sellers compete. The top 5 products take 80% of clicks and top 5 brands hold 83% of demand.
- What do buyers complain about in world book day costumes for girls?
- Top complaints mined from reviews: Size-Overall. The return rate is 2.5%.
- When does demand for world book day costumes for girls peak?
- Demand peaks in Feb–Mar; the busiest month runs 987.1× the quietest.
- What does it cost to enter the world book day costumes for girls niche?
- Listings span £5.98–£23.54; the average listing price is £11.86 (sweet spot $15–$100). The average incumbent carries 80 reviews — the moat a new listing must climb.