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8kg dumbbells

Skip it

Strong incumbent ratings (4.6★) — this niche doesn't clear our bar today.

Market size 32Growth 26Conversion 47Competition 47Returns 98Price range 80Avg price 91Brand share 33Review moat 25Quality gap 24

Returns

Incredible0.4%

return rate — above 5% kills the launch gate

Avg price

Great£21.35

avg listing price — sweet spot $15–$100

Price range

Great£10.32–£35.88

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

Conversion

Okay3.8%

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

Competition

Okay57%

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

Brand share

Okay85%

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

Market size

Okay£146K

£146K/yr · 182K searches

Growth

Okay+0.8%

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

Review moat

Bad4,741.59

avg incumbent reviews — the moat a new listing must climb

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

According to Flapen's Amazon United Kingdom niche tracking, 8kg dumbbells is a £146K/yr Amazon United Kingdom market (182K searches/yr). The top 5 brands hold 85% of demand. Verdict: Skip it — 46/100.

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

8kg dumbbells market data

Units sold / yr
6K–8K
avg 100–250/product
Revenue / yr
£128K–£171K
units × avg price
Conversion rate
3.8%
Avg BSR
#34
Page quality
0%
Prime
36%
Sponsored
95%
Out of stock
12.1%
Avg brand age
50 months
Avg seller age
201 days

Competition & brand share

The top 5 products take 57% of clicks — established leaders, but buyers still shop beyond them.

Brands

12 falling

Sellers

17

Top-5 brand share

85%

Top 20: 100%

Top-5 click share

57%

Top 20: 98%

Open market

12%

  • HOMCOM29%
  • Amazon Basics22%
  • ZENO16%
  • Athlyt13%
  • RAVIAN5%
  • Yaheetech3%
  • Open — no brand owns it (6 brands, 12%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +0.8% search growth over the last 90 days.
5K4KSpike '24Holiday '24Spike '25Prime Day '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.5×

Top 8kg dumbbells search terms

  • 8kg dumbbells pair91K/yr
  • 8kg dumbbells25K/yr
  • 9kg dumbbells pair14K/yr
  • 8 kg dumbbells10K/yr
  • 8kg weights13K/yr
  • dumbbells 8kg9K/yr
  • 8kg dumbbell5K/yr
  • dumbbells 8kg pair5K/yr
  • 8 kg dumbbells pair4K/yr
  • weights 8kg3K/yr
All search terms

Top 8kg dumbbells 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.

0%10%£15K20%£29K30%£44K40%£58K1101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 22 tracked products in this niche — three views at once, no toggling.

What buyers say about 8kg dumbbells

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

What buyers love

Quality-Overall35%

“Nice usable product”

Value For Money16%

“Great Value for Money”

Advertised Vs Actual Product13%

“As advertised”

Grip6%

“Good grip”

Weight Light5%

“Light as a feather”

Weight Heavy4%

“Brilliant weights”

Exercise/Sports Suitability3%

“Perfect for home workouts at any time of day or night”

Ease Of Use3%

“easy to use”

Comfort-Overall2%

“Very comfortable”

Shape/Style1%

“The hexagonal shape is nice so it doesnt roll off anywhere”

What buyers complain about

Smell19%

“There is a slight chemical smell like other reviewers have mentioned”

Quality-Overall16%

“Very Garbage”

Weight Heavy14%

“I also think maybe its slightly heavier than actual 8kg”

Size-Overall6%

“a little bulky”

Material Quality4%

“they were made off a very low standard of materials used for that product I put them in the garbage”

Rusts/Corrodes4%

“cracks on most sides so these cant be left outside as others you can or they will rust”

Product Condition2%

“was supposed to be new but looked heavily used not happy”

Scratch Resistance1%

“Many scratches awell with obvious factory work all over it with metal sticking out”

Exercise/Sports Suitability1%

“maybe I just lost some muscle or the gym had dumbbells that were wearing out or something like that”

Value For Money1%

“Cost me a small fortune the initial outlay”

Top return reasons

Weight Heavy46%
Size-Overall11%
Grip6%
Advertised Vs Actual Product5%
Defective Material/Parts5%
Weight Light4%
Quality-Overall3%
Handle Quality2%
Smell2%
Material Quality2%

Common questions

Is 8kg dumbbells profitable to sell on Amazon United Kingdom?
The niche generates £146K/yr across 22 tracked products. 1 of 3 products launched in the last 360 days are still selling. 90-day search growth is +0.8%. Flapen's verdict: Skip it (46/100).
How competitive is the 8kg dumbbells niche?
12 brands and 17 sellers compete. The top 5 products take 57% of clicks and top 5 brands hold 85% of demand.
What do buyers complain about in 8kg dumbbells?
Top complaints mined from reviews: Smell, Quality-Overall, Weight Heavy. The return rate is 0.4%.
When does demand for 8kg dumbbells peak?
Demand is steady year-round — the busiest month runs 1.5× the quietest.
What does it cost to enter the 8kg dumbbells niche?
Listings span £10.32–£35.88; the average listing price is £21.35 (sweet spot $15–$100). The average incumbent carries 4,742 reviews — the moat a new listing must climb.