Is cubii profitable to sell on Amazon United Kingdom?

The niche generates £45K/yr across 32 tracked products. 6 of 10 products launched in the last 360 days are still selling. 90-day search growth is -17.6%. Flapen's verdict: Skip it (48/100).

How competitive is the cubii niche?

22 brands and 43 sellers compete. The top 5 products take 53% of clicks and top 5 brands hold 59% of demand.

What do buyers complain about in cubii?

Top complaints mined from reviews: Durability, Quality-Overall, Instructions/User Manual/Troubleshooting. The return rate is 0.9%.

When does demand for cubii peak?

Demand peaks in Jan–Feb–May; the busiest month runs 4.2× the quietest.

What does it cost to enter the cubii niche?

Listings span £7.06–£90.59; the average listing price is £55.10 (sweet spot $15–$100). The average incumbent carries 4,356 reviews — the moat a new listing must climb.

cubii

Skip it

A small market ($45K/yr) — this niche doesn't clear our bar today.

Returns

Incredible0.9%

return rate — above 5% kills the launch gate

Avg price

Great£55.10

avg listing price — sweet spot $15–$100

Price range

Great£7.06–£90.59

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

Brand share

Great59%

top-5 brand share — no brand owns this niche

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Competition

Good53%

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

Review moat

Bad4,355.88

avg incumbent reviews — the moat a new listing must climb

Conversion

Bad1.8%

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

Growth

Bad-17.6%

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

Market size

Bad£45K

£45K/yr · 45K searches

Signals No Dominant Brand High Price

According to Flapen's Amazon United Kingdom niche tracking, cubii is a £45K/yr Amazon United Kingdom market (45K searches/yr). The top 5 brands hold 59% of demand. Demand peaks in Jan–Feb–May. Verdict: Skip it — 48/100.

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

cubii market data

Units sold / yr: 750–1K; avg 0–100/product
Revenue / yr: £41K–£55K; units × avg price
Conversion rate: 1.8%
Avg BSR: #15
Page quality: 0%
Prime: 81%
Sponsored: 97%
Out of stock: 32.0%
Avg brand age: 28 months
Avg seller age: 200 days

Competition & brand share

The top 5 products take 53% of clicks — established leaders, but buyers still shop beyond them.

Brands

22 falling

Sellers

Top-5 brand share

59%

Top 20: 99%

Top-5 click share

53%

Top 20: 89%

Open market

34%

EVOLAND13%
MERACH13%
Gritin13%
Centra12%
Morelax7%
MOMODA7%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -17.6% search growth over the last 90 days.

Peak months: Jan, Feb, May · busiest ÷ quietest = 4.2×

Open Trend

Top cubii search terms

electric stepper16K/yr -28.3%1.6% conv.
leg strengthening equipment7K/yr -0.2%0.9% conv.
leg workout equipment8K/yr -6.8%0.8% conv.
under desk elliptical machine7K/yr -3.9%1.7% conv.
electric pedal exerciser5K/yr -28.4%2.4% conv.
leg strengthener3K/yr -35.4%0.3% conv.

All search terms

Top cubii 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

EVOLAND Vibration Plate Exercise Machine Fitness Vibration Trainer

EVOLAND£48.794.6★2,126 rev

Gritin Resistance Bands Set of 5 Skin-Friendly Resistance Exercise Band

Gritin£7.064.4★114,638 rev

Centra Under Desk Elliptical Machine 15 Speeds Auto/Manual Modes Electric Seated Leg Exerciser for Seniors & Office Low-Impact Forward/Reverse Pedal Exerciser with Remote LCD & Resistance Bands

Centra£59.134.8★15 rev

MERACH Under Desk Elliptical Machine Ellipse Leg Exerciser as Seen on TV for Seniors with Remote Control & 12-Speeds Quiet Portable Electric Seated Pedal Exerciser Machine for Home Office

MERACH£87.804.6★1,262 rev

Morelax Under Desk Elliptical Machine for Home Electric Elliptical Machine for Seniors with 12 Adjustable Speed Seated Pedal Exerciser with Remote Control & Non-Slip Pad Quiet&Portable Leg Exerciser

Morelax£87.985.0★1 rev

Newest

by launch date

TODO Mini Under Desk Elliptical Machine Elliptical Pedal Exerciser for Home Cross Trainer with Remote Control & Non-Slip Pad 12 Adjustable Speed Low Impact Portable

TODO£70.418 rev

4mo ago

Morelax Under Desk Elliptical Machine for Home Electric Elliptical Machine for Seniors with 12 Adjustable Speed Seated Pedal Exerciser with Remote Control & Non-Slip Pad Quiet&Portable Leg Exerciser

Morelax£87.981 rev

5mo ago

Under Desk Elliptical Machine Electric Seated Leg Exerciser for Seniors Adjustable Speed & Low-Impact Design Quiet Portable Trainer with Remote Control for Home Office (Black-T3)

LUBBYGIM£55.7047 rev

6mo ago

Dripex Under Desk Elliptical Cross Trainer For Home Electric Leg Exercise Machine For Seniors Quiet & Portable Seated Pedal Exerciser w/Remote Control 12 Adjustable Speed (Mint Green)

Dripex£69.7942 rev

9mo ago

MOMODA Under Desk Elliptical Machine 2 in 1 Electric Seated Pedal Exerciser with 12 Adjustable for Senior & Home & Office Forward & Reverse Manual & Auto

MOMODA£59.8491 rev

10mo ago

What buyers say about cubii

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

What buyers love

Quality-Overall20%

“Quality seems robust”

Ease Of Use15%

“Easy to use”

Value For Money13%

“Excellent value for money”

Exercise/Sports Suitability10%

“Good exercise”

Advertised Vs Actual Product7%

“As advertised”

Noise Level4%

“not noisy”

Weight Light2%

“This pedal resistance band is lightweight”

Efficiency2%

“Perfect for the job required”

Size-Overall2%

“mechanically fit for purpose”

Durability2%

“Easy and durable”

What buyers complain about

Durability15%

“already falling apart”

Quality-Overall11%

“Obviously quality control isn't the best”

Instructions/User Manual/Troubleshooting7%

“Very poor instructions”

Strength7%

“Too weak”

Size-Overall5%

“This is not fit for purpose”

Ease Of Use3%

“could be hard to use if youre a little inflexible”

Value For Money3%

“Not great, cheap for a reason -”

Exercise/Sports Suitability3%

“Not as good as a full exercise bike though limited”

Balance/Stability3%

“If you have balance problems and cannot ride a bicycle, this”

Grip2%

“Slips a bit”

Top return reasons

Size-Overall13%

Functionality-Overall13%

Quality-Overall9%

Defective Material/Parts9%

Durability7%

Strength5%

Advertised Vs Actual Product3%

Strap/String Quality3%

Weight Heavy3%