Is hungry caterpillar costume profitable to sell on Amazon United Kingdom?

The niche generates £34K/yr across 24 tracked products. 0 of 10 products launched in the last 360 days are still selling. 90-day search growth is -92.6%. Flapen's verdict: Skip it (36/100).

How competitive is the hungry caterpillar costume niche?

12 brands and 26 sellers compete. The top 5 products take 52% of clicks and top 5 brands hold 73% of demand.

What do buyers complain about in hungry caterpillar costume?

Top complaints mined from reviews: Size-Overall, Durability, Value For Money. The return rate is 4.6%.

When does demand for hungry caterpillar costume peak?

Demand peaks in Feb–Mar; the busiest month runs 83.4× the quietest.

What does it cost to enter the hungry caterpillar costume niche?

Listings span £9.00–£21.74; the average listing price is £14.82 (sweet spot $15–$100). The average incumbent carries 179 reviews — the moat a new listing must climb.

hungry caterpillar costume

Skip it

Soft demand (-92.6% this quarter) — this niche doesn't clear our bar today.

Review moat

Great179.46

avg incumbent reviews — the moat a new listing must climb

Avg price

Good£14.82

avg listing price — sweet spot $15–$100

Competition

Good52%

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

Brand share

Good73%

top-5 brand share — brands hold most of the demand

Price range

Good£9.00–£21.74

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Returns

Okay4.6%

return rate — above 5% kills the launch gate

Conversion

Bad1.8%

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

Market size

Bad£34K

£34K/yr · 126K searches

Growth

Bad-92.6%

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

Signals Low Review Barrier

According to Flapen's Amazon United Kingdom niche tracking, hungry caterpillar costume is a £34K/yr Amazon United Kingdom market (126K searches/yr). The top 5 brands hold 73% of demand. Demand peaks in Feb–Mar. Verdict: Skip it — 36/100.

Data updated Jul 23, 2026 · scored weekly · How we score niches

hungry caterpillar costume market data

Units sold / yr: 1K–2K; avg 0–100/product
Revenue / yr: £19K–£22K; units × avg price
Conversion rate: 1.8%
Avg BSR: #980
Page quality: 0%
Prime: 88%
Sponsored: 50%
Out of stock: 22.2%
Avg brand age: 39 months
Avg seller age: 193 days

Competition & brand share

The top 5 products take 52% of clicks — established leaders, but buyers still shop beyond them.

Brands

12 rising

Sellers

Top-5 brand share

73%

Top 20: 100%

Top-5 click share

52%

Top 20: 95%

Open market

21%

generic28%
Rubies13%
Fun Shack12%
Eric Carle11%
Blues Group10%
Smiffys5%

Demand & seasonality

Weekly Amazon search volume, last 72 weeks — -92.6% search growth over the last 90 days.

Peak months: Feb, Mar · busiest ÷ quietest = 83.4×

Open Trend

Top hungry caterpillar costume search terms

caterpillar costume18K/yr -66.1%1.4% conv.
hungry caterpillar costume59K/yr -96.9%1.3% conv.
caterpillar costume kids7K/yr -66.0%2.1% conv.
the hungry caterpillar costume16K/yr -96.4%0.4% conv.
very hungry caterpillar costume11K/yr -96.6%0.0% conv.
the very hungry caterpillar costume11K/yr -96.9%1.3% conv.
hungry caterpillar costume kids5K/yr -98.3%3.8% conv.

All search terms

Top hungry caterpillar 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.

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

Unisex Caterpillar Onesie Fancy Dress Costume Hoody Pyjama Sleep wear Carnival Costume S(height 150cm-160cm)

generic£17.564.1★36 rev

Eric Carle The Very Hungry Caterpillar Kids Red Long Sleeve Pyjama Set | Crew Neck Cartoon Nightwear | Boys Girls Long Leg PJs for Bedtime & Sleepover Merch - 12-18 Months

Eric Carle£16.285.0★4 rev

Unisex Caterpillar Onesie Fancy Dress Costume Hoody Pyjama Sleep wear Carnival Costume L(height 170cm-180cm)

generic£17.494.1★36 rev

Bristol Novelty Childrens Caterpillar Costume Age 6-8 years old Halloween

Rubies£11.614.3★384 rev

Smiffys Official The Very Hungry Caterpillar Costume for Children Licensed Storybook Fancy Dress with Easy Wear Tabard & Separate Character Hood Unisex Kids Costume World Book Day Age 1-2

Smiffys£10.565.0★3 rev

Newest

by launch date

Smiffys Official The Very Hungry Caterpillar Costume for Children Licensed Storybook Fancy Dress with Easy Wear Tabard & Separate Character Hood Unisex Kids Costume World Book Day Age 1-2

Smiffys£10.563 rev

5mo ago

Eric Carle The Very Hungry Caterpillar Kids Red Long Sleeve Pyjama Set | Crew Neck Cartoon Nightwear | Boys Girls Long Leg PJs for Bedtime & Sleepover Merch - 12-18 Months

Eric Carle£16.284 rev

6mo ago

Kavoc Caterpillar Costume Set Includes Caterpillar Headband Hat and Self Adhesive Felt Foods Fruits Stickers for World Book Day Cosplay

Kavoc£12.225 rev

7mo ago

Aleshime Caterpillar Costume for Kids Toddlers World Book Day Costume Fancy Dress for Girls and Boys Age 3-12Y(Rainbow)

Aleshime£15.313 rev

7mo ago

Blues Group Officially Licensed The Very Hungry Caterpillar Unisex Kids Value Costume | World Book Day Dress-Up and Fancy Dress | Ages 3-8| (4-6 Years)

Blues Group£13.678 rev

8mo ago

What buyers say about hungry caterpillar costume

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

What buyers love

Size-Overall27%

“Right size”

Quality-Overall26%

“Well made, good quality and vibrant colours though”

Advertised Vs Actual Product6%

“exactly as you would expect it to be”

Developmental Needs6%

“Perfect for kids”

Value For Money6%

“And not too expensive either”

Color4%

“The rainbow colours are great, really vibrant and bright and I love the addition of the little feet”

Comfort-Overall4%

“seems comfortable”

Material Quality4%

“material is nice”

Ease Of Use4%

“easy to get on and off”

Design-Overall3%

“Good quality and well designed outfit”

What buyers complain about

Size-Overall27%

“Sizes are massively out”

Durability17%

“Broke straight away”

Value For Money14%

“Not the cheapest”

Advertised Vs Actual Product8%

“False advertising”

Quality-Overall8%

“Quality not so good either for the price”

Stretchability/Expandability/Elasticity3%

“The costume came all perfect, material is nice, however, when to try it on, the elastic bad on one of the side came off from the seam”

Material Quality1%

“I think made of felt. it feels felt like though I can't find any material information on the listing”

Top return reasons

Size-Overall87%

Quality-Overall5%

Advertised Vs Actual Product2%

Material Quality1%

Strap/String Quality1%

Stitch/Finish/Polish1%

Adhesion/Stickiness1%

Value For Money1%

Comfort-Overall0%

Inflation/Deflation0%

Common questions

Is hungry caterpillar costume profitable to sell on Amazon United Kingdom?: The niche generates £34K/yr across 24 tracked products. 0 of 10 products launched in the last 360 days are still selling. 90-day search growth is -92.6%. Flapen's verdict: Skip it (36/100).
How competitive is the hungry caterpillar costume niche?: 12 brands and 26 sellers compete. The top 5 products take 52% of clicks and top 5 brands hold 73% of demand.
What do buyers complain about in hungry caterpillar costume?: Top complaints mined from reviews: Size-Overall, Durability, Value For Money. The return rate is 4.6%.
When does demand for hungry caterpillar costume peak?: Demand peaks in Feb–Mar; the busiest month runs 83.4× the quietest.
What does it cost to enter the hungry caterpillar costume niche?: Listings span £9.00–£21.74; the average listing price is £14.82 (sweet spot $15–$100). The average incumbent carries 179 reviews — the moat a new listing must climb.