Is kerplunk profitable to sell on Amazon United Kingdom?

The niche generates £70K/yr across 8 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -20.5%. Flapen's verdict: Skip it (34/100).

How competitive is the kerplunk niche?

7 brands and 58 sellers compete. The top 5 products take 93% of clicks and top 5 brands hold 95% of demand.

What do buyers complain about in kerplunk?

Top complaints mined from reviews: Quality-Overall, Strength, Functionality-Overall. The return rate is 1.2%.

When does demand for kerplunk peak?

Demand peaks in Nov–Dec; the busiest month runs 10.9× the quietest.

What does it cost to enter the kerplunk niche?

Listings span £5.17–£24.70; the average listing price is £11.90 (sweet spot $15–$100). The average incumbent carries 10,371 reviews — the moat a new listing must climb.

kerplunk

Skip it

A concentrated shelf (top 5 take 93% of clicks) — this niche doesn't clear our bar today.

Returns

Great1.2%

return rate — above 5% kills the launch gate

Quality gap

Good4.3★

avg incumbent rating — lower means beatable quality

Conversion

Good4.2%

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

Price range

Good£5.17–£24.70

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

Avg price

Okay£11.90

avg listing price — sweet spot $15–$100

Review moat

Bad10,370.5

avg incumbent reviews — the moat a new listing must climb

Market size

Bad£70K

£70K/yr · 140K searches

Growth

Bad-20.5%

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

Brand share

Bad95%

top-5 brand share — brand-locked demand

Competition

Bad93%

top-5 click share — a locked-up shelf

According to Flapen's Amazon United Kingdom niche tracking, kerplunk is a £70K/yr Amazon United Kingdom market (140K searches/yr). The top 5 brands hold 95% of demand. Demand peaks in Nov–Dec. Verdict: Skip it — 34/100.

Data updated Jul 29, 2026 · scored weekly · How we score niches

kerplunk market data

Units sold / yr: 8K–10K; avg 1,250–1,500/product
Revenue / yr: £95K–£119K; units × avg price
Conversion rate: 4.2%
Avg BSR: #117
Page quality: 0%
Prime: 100%
Sponsored: 88%
Out of stock: 0.0%
Avg brand age: 50 months
Avg seller age: 180 days

Competition & brand share

The top 5 products capture 93% of clicks — a locked-up shelf that new listings rarely crack.

Brands

7 rising

Sellers

Top-5 brand share

95%

Top 20: 100%

Top-5 click share

93%

Top 20: 100%

Open market

Toyrific42%
Juegos Mattel36%
Cheerful Children Toys10%
TOMY4%
Montrix4%
Mistep3%
Open — no brand owns it (1 brand, 2%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -20.5% search growth over the last 90 days.

Peak months: Nov, Dec · busiest ÷ quietest = 10.9×

Open Trend

Top kerplunk search terms

kerplunk78K/yr -17.6%3.4% conv.
kerplunk game for kids33K/yr -7.2%3.7% conv.
ker plunk8K/yr -25.6%2.2% conv.
kerplunk game9K/yr -12.7%2.4% conv.
kerplunk game original7K/yr -67.2%4.8% conv.
ker plunk game5K/yr -50.1%5.9% conv.

All search terms

Top kerplunk 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 8 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Toyrific | Marble Mayhem Toy Traditional Educational Family Game with 30 Marbles and Balancing Sticks for Kids Boys and Girls Ages 3+

Toyrific£7.934.0★1,671 rev

Mattel Ker Plunk Game

Juegos Mattel£24.704.5★17,281 rev

Cheerful Children Toys Jumbo Kids Dart Board Set (Dinosaur-2 73cm)

Cheerful Children Toys£8.564.6★209 rev

TOMY Pop Up Pirate Classic Childrens Action Board Game Family and Preschool Kids Game for Children 4 5 6 7 8 Year Old Boys Girls Adults Packaging may vary Wood - Choc Brown

TOMY£7.634.5★59,834 rev

Montessori Game Wooden Board Games 48 Colorful Sticks Kids Games with 12 Balls Educational Toys for 3 4 5 6 Year Old Math Learning & Fine Motor Skills Toy Family Travel Game Gifts for Boys Girls

Montrix£15.734.4★113 rev

Newest

by launch date

Montessori Game Wooden Board Games 48 Colorful Sticks Kids Games with 12 Balls Educational Toys for 3 4 5 6 Year Old Math Learning & Fine Motor Skills Toy Family Travel Game Gifts for Boys Girls

Montrix£15.73113 rev

6mo ago

Cheerful Children Toys Jumbo Kids Dart Board Set (Dinosaur-2 73cm)

Cheerful Children Toys£8.56209 rev

11mo ago

Montessori Game Wooden Board Games 42 Colorful Wooden Sticks Dice Games Math Educational Toys for 3 4 5 6 Years Old Fine Motor Skills & Counting Toy Family Travel Game for Kids Gifts

Monwoo£14.03224 rev

2y ago

Magnetic Dart Board for Kids 12pcs Magnetic Darts 15 Double Sided Board Game Set Safe Indoor Outdoor Family Game Best Toy Gift for Teenager 5 6 7 8 9 10 11 12 13 14 15 Years Old Boys (15)

Mistep£11.44630 rev

5y ago

Toyrific | Complete Traditional Classic Family Game Board Click and Jump Frustration for Kids and Adults

Toyrific£5.173,002 rev

15y ago

What buyers say about kerplunk

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

What buyers love

Fun/Entertainment Experience39%

“Fun game”

Value For Money13%

“worth the price”

Quality-Overall13%

“Good quality”

Advertised Vs Actual Product6%

“As advertised”

Strength5%

“It's sturdy”

Gifting Purpose4%

“What can you say excellent birthday present for my grandson”

Developmental Needs3%

“Perfect for young children”

Educational-Overall3%

“Very educational”

Design-Overall2%

“Good construction”

Durability2%

“Great quality and durable”

What buyers complain about

Quality-Overall19%

“poor quality too as some broke”

Strength11%

“flimsy”

Functionality-Overall10%

“Just wont pop up”

Fun/Entertainment Experience8%

“it wasn't that much fun”

Adhesion/Stickiness8%

“Darts won't stick”

Assembly/Installation6%

“It takes a little time to set up”

Durability5%

“the pop up mechanism broke within 30 minutes and theres no way to dismantle and repair”

Touch/Button Controls4%

“The click mechanisms stopped working”

Ease Of Use4%

“Not practical at all”

Color4%

“Green and blue are also swapped”

Top return reasons

Functionality-Overall45%

Gifting Purpose10%

Quality-Overall10%

Defective Material/Parts9%

Size-Overall5%

Assembly/Installation4%

Mechanism Issues2%

Strength2%

Adhesion/Stickiness2%

Material Quality1%

Common questions

Is kerplunk profitable to sell on Amazon United Kingdom?: The niche generates £70K/yr across 8 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -20.5%. Flapen's verdict: Skip it (34/100).
How competitive is the kerplunk niche?: 7 brands and 58 sellers compete. The top 5 products take 93% of clicks and top 5 brands hold 95% of demand.
What do buyers complain about in kerplunk?: Top complaints mined from reviews: Quality-Overall, Strength, Functionality-Overall. The return rate is 1.2%.
When does demand for kerplunk peak?: Demand peaks in Nov–Dec; the busiest month runs 10.9× the quietest.
What does it cost to enter the kerplunk niche?: Listings span £5.17–£24.70; the average listing price is £11.90 (sweet spot $15–$100). The average incumbent carries 10,371 reviews — the moat a new listing must climb.