crunch labs build box
Skip itSoft demand (-19.3% this quarter) — this niche doesn't clear our bar today.
Returns
Great1.2%return rate — above 5% kills the launch gate
Avg price
Great£19.11avg listing price — sweet spot $15–$100
Price range
Great£6.76–£39.78cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Review moat
Good667.26avg incumbent reviews — the moat a new listing must climb
Brand share
Okay80%top-5 brand share — brands hold most of the demand
Competition
Okay61%top-5 click share — leaders hold, buyers still browse
Market size
Okay£100K£100K/yr · 280K searches
Conversion
Bad1.9%search→purchase rate — share of searches ending in a sale
Growth
Bad-19.3%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, crunch labs build box is a £100K/yr Amazon United Kingdom market (280K searches/yr). The top 5 brands hold 80% of demand. Verdict: Skip it — 46/100.
Data updated Jul 30, 2026 · scored weekly · How we score niches
crunch labs build box market data
- Units sold / yr
- 3K–3K
- avg 100–250/product
- Revenue / yr
- £48K–£57K
- units × avg price
- Conversion rate
- 1.9%
- Avg BSR
- #230
- Page quality
- 0%
- Prime
- 95%
- Sponsored
- 95%
- Out of stock
- 11.1%
- Avg brand age
- 40 months
- Avg seller age
- 184 days
Competition & brand share
The top 5 products take 61% of clicks — established leaders, but buyers still shop beyond them.Brands
13 rising
Sellers
35
Top-5 brand share
80%
Top 20: 100%
Top-5 click share
61%
Top 20: 100%
Open market
14%
- ADUSRIZ39%
- CRUNCH LABS19%
- Lypsochaat8%
- SCIENCE DIARY7%
- CONSTRUCT & CREATE7%
- OMWay6%
- Open — no brand owns it (7 brands, 14%)
Demand
Weekly Amazon search volume, last 34 weeks — -19.3% search growth over the last 90 days.Top crunch labs build box search terms
- crunch labs build box162K/yr
- crunch labs48K/yr
- crunch labs build box by mark rober16K/yr
- crunchlabs11K/yr
- mark rober crunch labs9K/yr
- crunchlabs build box10K/yr
- kiwico7K/yr
- kiwico kits6K/yr
- crunch lab7K/yr
- crunch labs uk4K/yr
Top crunch labs build box 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 19 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
STEM Toys Age 8+ Wooden Engineering Science Experiments kit(6 Pack Set)
ADUSRIZ£18.424.5★459 rev
CrunchLabs by Mark Rober Experience Mind Blowing Fun with Turbo Trick Planes FOLD LAUNCH FLY & Create the Ultimate Paper Airplane Engineered to Deliver Huge Blow-your-mind aha Moments
CRUNCH LABS£12.704.0★2 rev
STEM Toys Age 8+ Wooden Engineering Science Experiments kit(6 Pack Set)
ADUSRIZ£18.784.2★189 rev
6 in 1 STEM Kits for Kids 6-8 8-12 Electronic STEM Science Robot Kit Engineering Building Activities Kit Educational Learning Toys for Kids Boys Girls 8-12 Birthday Gift
Lypsochaat£18.644.0★240 rev
SCIENCE DIARY STEM Toys for Kids - Robot Building Kit Engineering Experiments Crafts Set with Motor and Tools Learning Toys Activities for Researching Christmas Birthday Gifts for Boys and Girls
SCIENCE DIARY£18.464.6★172 rev
Newest
by launch dateCrunchLabs by Mark Rober Experience Mind Blowing Fun with Turbo Trick Planes FOLD LAUNCH FLY & Create the Ultimate Paper Airplane Engineered to Deliver Huge Blow-your-mind aha Moments
CRUNCH LABS£12.702 rev
CrunchLabs The Crunchinator by Mark Rober Crunch Smoosh Squeeze & Pop Objects Harness the Awesome Kid Power And Experience Mind Blowing Crushing Satisfaction! What Will You Crunch?
CRUNCH LABS£29.091 rev
CrunchLabs by Mark Rober Slime Prank Lab Build a Snot Pump & Create the Perfect Prank Slime Every Time! Engineered to Deliver Huge Blow-your-mind aha Moments Where Brainpower Meets Adrenaline!
CRUNCH LABS£18.270 rev
SCIENCE DIARY STEM Toys for Kids - Robot Building Kit Engineering Experiments Crafts Set with Motor and Tools Learning Toys Activities for Researching Christmas Birthday Gifts for Boys and Girls
SCIENCE DIARY£18.46172 rev
SharkBebe BoysTshirt Steves Lava Chicken Boys Cartoon T-Shirt Summer 100% Cotton Short Sleeve Top Tee for Kids Ages 4-13 (UK Age 9 Years 10 Years Regular Navy)
SharkBebe£11.0422 rev
Trending
90-day click momentumCrunchLabs The Crunchinator by Mark Rober Crunch Smoosh Squeeze & Pop Objects Harness the Awesome Kid Power And Experience Mind Blowing Crushing Satisfaction! What Will You Crunch?
CRUNCH LABS£29.095.0★
CrunchLabs by Mark Rober Experience Mind Blowing Fun with Turbo Trick Planes FOLD LAUNCH FLY & Create the Ultimate Paper Airplane Engineered to Deliver Huge Blow-your-mind aha Moments
CRUNCH LABS£12.704.0★
CrunchLabs by Mark Rober Slime Prank Lab Build a Snot Pump & Create the Perfect Prank Slime Every Time! Engineered to Deliver Huge Blow-your-mind aha Moments Where Brainpower Meets Adrenaline!
CRUNCH LABS£18.270.0★
WEAR IF U DARE Mens Boxers Shorts (5 Pack) Multipacked Underwear Gift Set | Comfortable Stretch Cotton Mens Trunks Colourful Underpants Briefs Teal
WEAR IF U DARE£12.464.4★
SharkBebe BoysTshirt Steves Lava Chicken Boys Cartoon T-Shirt Summer 100% Cotton Short Sleeve Top Tee for Kids Ages 4-13 (UK Age 9 Years 10 Years Regular Navy)
SharkBebe£11.044.3★
What buyers say about crunch labs build box
What buyers praise and complain about, mined from review topics.What buyers love
“Engaging toy”
“A nice gift”
“Kit itself looked ok”
“Well worth the money”
“Fun educational gift”
“The instructions were clear”
“Not too challenging to put together”
“thoroughly enjoyed building it”
“I bought this for a gift for my sons best friend and he absolutely loves it,so creative and great gift”
“Brilliant for kids”
What buyers complain about
“The instructions arent great and myself and my son are very capable so its not on us”
“rubbish quality”
“didnt work as intended”
“Very small parts”
“Broke”
“Packets of cheap Chinese plastic with no instructions on how to assemble”
“unfortunately one of the wheels is faulty”
“Not worth the effort. or cost”
“some of the electrical connections were not made well”
“A bit cheap in its materials and qualtiy”
Top return reasons
Common questions
- Is crunch labs build box profitable to sell on Amazon United Kingdom?
- The niche generates £100K/yr across 19 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is -19.3%. Flapen's verdict: Skip it (46/100).
- How competitive is the crunch labs build box niche?
- 13 brands and 35 sellers compete. The top 5 products take 61% of clicks and top 5 brands hold 80% of demand.
- What do buyers complain about in crunch labs build box?
- Top complaints mined from reviews: Instructions/User Manual/Troubleshooting, Quality-Overall, Functionality-Overall. The return rate is 1.2%.
- What does it cost to enter the crunch labs build box niche?
- Listings span £6.76–£39.78; the average listing price is £19.11 (sweet spot $15–$100). The average incumbent carries 667 reviews — the moat a new listing must climb.