baby halloween costume
Skip itWeak search conversion (0.1%) — this niche doesn't clear our bar today.
Competition
Great34%top-5 click share — an open shelf
Review moat
Great444.51avg incumbent reviews — the moat a new listing must climb
Brand share
Good62%top-5 brand share — brands hold most of the demand
Avg price
Good£13.62avg listing price — sweet spot $15–$100
Price range
Okay£7.37–£21.27cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Okay4.1%return rate — above 5% kills the launch gate
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Growth
Bad-19.7%90-day search growth — must beat 0% to launch
Market size
Bad£10K£10K/yr · 680K searches
Conversion
Bad0.1%search→purchase rate — share of searches ending in a sale
According to Flapen's Amazon United Kingdom niche tracking, baby halloween costume is a £10K/yr Amazon United Kingdom market (680K searches/yr). The top 5 brands hold 62% of demand. Demand peaks in Sep–Oct–Nov. Verdict: Skip it — 37/100.
Data updated Jul 23, 2026 · scored weekly · How we score niches
baby halloween costume market data
- Units sold / yr
- 4K–5K
- avg 0–100/product
- Revenue / yr
- £54K–£68K
- units × avg price
- Conversion rate
- 0.1%
- Avg BSR
- #191
- Page quality
- 0%
- Prime
- 89%
- Sponsored
- 84%
- Out of stock
- 18.9%
- Avg brand age
- 41 months
- Avg seller age
- 192 days
Competition & brand share
Clicks spread well past the top 5 (34% combined) — an open shelf where new products get seen.Brands
28 falling
Sellers
61
Top-5 brand share
62%
Top 20: 95%
Top-5 click share
34%
Top 20: 71%
Open market
32%
- Disney30%
- Nicoxijia11%
- BABWWNIX9%
- Sxkayxr7%
- Carolilly5%
- WERNZATT5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -19.7% search growth over the last 90 days.Peak months: Sep, Oct, Nov · busiest ÷ quietest = 187.1×
Top baby halloween costume search terms
- baby costume36K/yr
- baby halloween costume276K/yr
- baby fancy dress15K/yr
- baby halloween costume 0-3 months16K/yr
- baby halloween costume 6-9 months38K/yr
- baby halloween20K/yr
- baby halloween outfit13K/yr
- baby halloween costumes 12-18 months61K/yr
- baby halloween costume 9-12 months33K/yr
- newborn halloween costume14K/yr
Top baby halloween costume 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
Nicoxijia Toddler Baby Halloween Costume Fuzzy Warm Hooded Romper Funny Cosplay Zip-Up Jumpsuit Fall Winter Animal Outfit (Blue 6-12 Months)
Nicoxijia£17.954.6★105 rev
Disney Sleepsuit with Hat | The Incredibles Baby Grow | Newborn Sleepsuit | Baby Sleepwear Set Red 12-18 Months
Disney£13.454.6★1,930 rev
Sxkayxr Cartoon Newborn Baby Boys Girls Romper Goku-Inspired Infant Outfit Jumpsuit Clothes
Sxkayxr£15.014.5★1,439 rev
Baby Boy Girl Dinosaur Costume Sleeveless Animals Hooded Romper Infants Cartoon Halloween Cosplay Costumes Jumpsuit (Turquoise 0-3 Months)
BABWWNIX£12.685.0★6 rev
Disney Baby Boys Toy Story 4 Buzz Lightyear Babygrow + Bandanna 12-18 Months
Disney£10.464.7★501 rev
Newest
by launch dateBaby Boy Girl Dinosaur Costume Sleeveless Animals Hooded Romper Infants Cartoon Halloween Cosplay Costumes Jumpsuit (Turquoise 0-3 Months)
BABWWNIX£12.686 rev
Baby Boy Girl Dinosaur Costume Sleeveless Animals Hooded Romper Infants Cartoon Halloween Cosplay Costumes Jumpsuit (Turquoise 3-6 Months)
BABWWNIX£12.796 rev
BeliBacca Newborn Halloween Prisoner Outfits Infant Baby Fall Winter Casual Bodysuit Long Sleeve Letter Print Striped Romper Pants Hats Set (White 0-3 Months)
BeliBacca£10.9511 rev
Carolilly Baby Boys Dinosaur Outfits Winter Warm Infant Baby Jumpsuit Newborn Hood Romper Plush Sleeveless Bodysuits Toddler Halloween Clothes (Green 0-3 Months)
Carolilly£9.956 rev
Geagodelia My First Halloween Baby Girl Outfit Cute Pumpkin Print Long Sleeve One Piece Halloween Baby Clothes with Headband (Cutest Little Pumpkin Khaki 0-3 Months)
Geagodelia£7.9416 rev
Trending
90-day click momentum
culbutomind Baby Twins Bodysuit Ketchup Mustard Newborn Baby Outfits Unisex Romper Infant Jumpsuit
culbutomind£19.754.7★
FeMereina Halloween Costumes Toddler Baby Boy Girl Animal Chick Romper Sleeveless Zip Up Hooded Cosplay Jumpsuit with Striped Socks (Yellow 0-6 Months)
FeMereina£9.004.8★
Disney Baby Boys Toy Story Sleepsuit Buzz Lightyear Multicoloured Age 6 to 9 Months
Disney£12.994.5★
Disney Baby Boys Toy Story 4 Buzz Lightyear Babygrow + Bandanna 12-18 Months
Disney£10.464.7★
SYHVGI Toddler Baby Girls Boys Fleece Jumpsuit Cartoon Animal Horn Hooded Rompers Halloween Carnival Cosplay Outfits (Blue 6-12 Months)
SYHVGI£15.815.0★
What buyers say about baby halloween costume
What buyers praise and complain about, mined from review topics.What buyers love
“Good quality costume”
“It fitted my 4 month old perfectly”
“A great price”
“wasn't too fluffy or hot so I didn't have to worry about her overheating”
“As described,”
“it has stretch”
“is also very practical for when taking the baby swimming”
“The fabric feels really soft”
What buyers complain about
“Ridiculous sizing”
Top return reasons
Common questions
- Is baby halloween costume profitable to sell on Amazon United Kingdom?
- The niche generates £10K/yr across 57 tracked products. 0 of 7 products launched in the last 360 days are still selling. 90-day search growth is -19.7%. Flapen's verdict: Skip it (37/100).
- How competitive is the baby halloween costume niche?
- 28 brands and 61 sellers compete. The top 5 products take 34% of clicks and top 5 brands hold 62% of demand.
- What do buyers complain about in baby halloween costume?
- Top complaints mined from reviews: Size-Overall. The return rate is 4.1%.
- When does demand for baby halloween costume peak?
- Demand peaks in Sep–Oct–Nov; the busiest month runs 187.1× the quietest.
- What does it cost to enter the baby halloween costume niche?
- Listings span £7.37–£21.27; the average listing price is £13.62 (sweet spot $15–$100). The average incumbent carries 445 reviews — the moat a new listing must climb.