Is building blocks profitable to sell on Amazon United Kingdom?

The niche generates £200K/yr across 18 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is -19.9%. Flapen's verdict: Skip it (37/100).

How competitive is the building blocks niche?

12 brands and 85 sellers compete. The top 5 products take 68% of clicks and top 5 brands hold 86% of demand.

What do buyers complain about in building blocks?

Top complaints mined from reviews: Size-Overall, Advertised Vs Actual Product, Print Quality. The return rate is 0.6%.

When does demand for building blocks peak?

Demand peaks in Oct–Nov–Dec; the busiest month runs 3.0× the quietest.

What does it cost to enter the building blocks niche?

Listings span £4.32–£24.88; the average listing price is £11.73 (sweet spot $15–$100). The average incumbent carries 13,382 reviews — the moat a new listing must climb.

building blocks

Skip it

Soft demand (-19.9% this quarter) — this niche doesn't clear our bar today.

Returns

Incredible0.6%

return rate — above 5% kills the launch gate

Avg price

Okay£11.73

avg listing price — sweet spot $15–$100

Price range

Okay£4.32–£24.88

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

Market size

Okay£200K

£200K/yr · 565K searches

Conversion

Okay3.0%

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

Brand share

Okay86%

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

Competition

Okay68%

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

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Review moat

Bad13,381.61

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-19.9%

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

According to Flapen's Amazon United Kingdom niche tracking, building blocks is a £200K/yr Amazon United Kingdom market (565K searches/yr). The top 5 brands hold 86% of demand. Demand peaks in Oct–Nov–Dec. Verdict: Skip it — 37/100.

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

building blocks market data

Units sold / yr: 15K–20K; avg 500–750/product
Revenue / yr: £176K–£235K; units × avg price
Conversion rate: 3.0%
Avg BSR: #126
Page quality: 0%
Prime: 94%
Sponsored: 61%
Out of stock: 10.8%
Avg brand age: 32 months
Avg seller age: 175 days

Competition & brand share

The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them.

Brands

12 falling

Sellers

Top-5 brand share

86%

Top 20: 100%

Top-5 click share

68%

Top 20: 100%

Open market

11%

Mega Bloks41%
EXERZ26%
The Magic Toy Shop7%
Stickle Bricks7%
GOMEINA5%
RAM ONLINE3%
Open — no brand owns it (6 brands, 11%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -19.9% search growth over the last 90 days.

Peak months: Oct, Nov, Dec · busiest ÷ quietest = 3.0×

Open Trend

Top building blocks search terms

building blocks234K/yr -12.3%1.6% conv.
blocks59K/yr -9.9%1.3% conv.
building blocks for 1+ year old29K/yr +2.9%4.3% conv.
building bricks38K/yr -29.8%0.2% conv.
block27K/yr -12.4%0.2% conv.
building blocks for 2 year olds32K/yr -51.0%3.6% conv.
building blocks for 2+ year olds25K/yr -37.3%2.5% conv.
building blocks for kids13K/yr -2.6%1.0% conv.
blocks for 1+ year old12K/yr +19.3%3.3% conv.
building blocks for 1 year old13K/yr -29.7%3.2% conv.

All search terms

Top building blocks 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 18 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

MEGA BLOKS First Builders Big Building Bag Toddler Blocks Toy Blue

Mega Bloks£6.484.8★63,880 rev

Exerz Yoga Blocks 2 Pack EVA Foam Gym Bricks Pilates Stretch Black

EXERZ£7.544.6★4,162 rev

MEGA BLOKS First Builders Big Building Bag Toddler Blocks Toy Blue

Mega Bloks£11.194.8★84,025 rev

The Magic Toy Shop Wooden ABC Blocks & Number Block Set 40 Pcs - Early Learning Educational Toys Alphabet Letters Shapes Animals Storage Bag - Great for Toddler Stacking Games 18 Months+

The Magic Toy Shop£10.794.7★280 rev

Montessori Educational Toys for 1-2-3-5 Year Olds Boys Girls 30PCS Wooden Number Building Blocks Preschool Learning Toddler Toys Gifts Math Puzzle Games Stacking Toys 12-18 Months with Storage Bag

GOMEINA£7.193.8★143 rev

Newest

by launch date

wotoyd 30PCS Building Blocks 3cm Stacking Blocks Wooden Blocks 1 Year Old

wotoyd£9.1838 rev

8mo ago

Stickle Bricks Big Bag Toddler Construction Toy with Assorted Shapes & Colours Easy Stick & Stack Building Blocks for Creative Play Storage Bag Included Ages 18 Months+ STEM Learning Fun

Stickle Bricks£15.9390 rev

11mo ago

Magnetic Blocks for Kids 150PCS Creative Magnetic Building Blocks for Learning & Fun | Colorful Kid Magnets & Educational Magnetics Toys for Toddlers 3+

LAKY KING£19.0427 rev

11mo ago

COOLJOYA Magnetic Blocks-150 PCS Magnetic Building Blocks Easter Gifts for Kids Construction Toys for Montessori STEM Sensory Toys for Boys Girls Age 3 4 5 6 7 8 9 10 Stowable

COOLJOYA£24.132,639 rev

1y ago

Montessori Educational Toys for 1-2-3-5 Year Olds Boys Girls 30PCS Wooden Number Building Blocks Preschool Learning Toddler Toys Gifts Math Puzzle Games Stacking Toys 12-18 Months with Storage Bag

GOMEINA£7.19143 rev

1y ago

What buyers say about building blocks

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

What buyers love

Fun/Entertainment Experience21%

“fun to build with”

Value For Money13%

“Good price”

Quality-Overall12%

“Good value for a good quality set”

Gifting Purpose8%

“Great for gifting”

Size-Overall7%

“Good size”

Color5%

“bold colours”

Creativity4%

“Fun and allows creativity and imagination to play out”

Ease Of Use3%

“Easy to use”

Durability3%

“Versatile and durable”

Educational-Overall3%

“preschool learning toys”

What buyers complain about

Size-Overall33%

“Its a very small box”

Advertised Vs Actual Product6%

“deceiving”

Print Quality6%

“Only one of them has been printed correctly”

Magnetic Strength/Adsorption4%

“Not happy at all these blocks are not magnetic”

Strength3%

“although the bag could be a bit sturdier”

Choking3%

“dangerous to a 14 month old as they could b a choking hazard due to size”

Handle Quality3%

“handle was banging on wall so fixed to wall so didn't keep on damaging door handles”

Sharpness3%

“Corners too sharp for small children”

Quality-Overall3%

“Average quality”

Value For Money2%

“I think that the price could be more competitive for what you get”

Top return reasons

Size-Overall49%

Quality-Overall10%

Advertised Vs Actual Product6%

Defective Material/Parts5%

Value For Money4%

Gifting Purpose3%