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Cubii

a small market ($45K/yr) — Cubii doesn't clear our bar today.

Flapen Score

48
Skip it
Market size 11Growth 16Conversion 23Competition 54Returns 96Price range 87Avg price 91Brand share 76Review moat 25Quality gap 58
This niche Category average

Is Cubii profitable on Amazon?

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.

Cubii: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Not really. Search demand moved -17.6% over the last 90 days and 1.8% of searches end in a purchase.

£45K

revenue / yr

Units sold / yr1K
Search volume / yr-17.6%45K
Conversion rate1.8%
Avg price£55.10

Who owns the niche?

The top 5 brands hold 59% of demand, so 41% of the market is open.

41%

open market share

Brands · sellers22 · 43
Top-5 product click share53%
Open market41%
Avg brand age28 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.4★ — the gap to enter on.

0/100

page quality · 32 products

Sponsored placement97%
New entrants (1y)10· 6 succeeded
Avg rating4.4★
Avg reviews4,356

Top Cubii products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Competition: brands, sellers & click share

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

£0£2K£4K£5K£7K1101001K10K100K1.0M Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

22 falling

Sellers

43

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%

Cubii demand & seasonality

Weekly search volume, with the niche's key stats alongside.

Volume45KCVR1.8%Products32Brands22Top 5 Brands59%OOS Rate32.0%Rating4.4★Reviews4,356Avg BSR#15
2K1KSpike '24Holiday '24Spike '25Prime Day '25Black Friday '25Holiday '25Spike '26SepDecMarJunAugNovMarMay

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

Top Cubii search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

  • electric stepper16K/yr
  • leg strengthening equipment7K/yr
  • leg workout equipment8K/yr
  • under desk elliptical machine7K/yr
  • electric pedal exerciser5K/yr
  • leg strengthener3K/yr

What reviews say buyers love and hate about Cubii

What buyers mention most, as a share of all reviews.

What buyers love

77% of reviews
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

What buyers complain about

60% of reviews
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

Cubii return rate & reasons

Why buyers send it back, as a share of all return requests.

0.9%

Return rate

24%

Fixable by listing

The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.

1Size-Overall
13%
2Functionality-Overall
13%
3Quality-Overall
9%
4Defective Material/Parts
9%
5Durability
7%

Common Cubii questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores Cubii 48/100 on Amazon United Kingdom — Skip it. The niche generates £45K/yr across 32 tracked products. 6 of 10 products launched in the last 360 days are still selling. Search demand moved -17.6% over the last 90 days.
Search demand for Cubii on Amazon United Kingdom peaks in Jan–Feb–May, where the busiest month runs 4.2× the quietest.