Is slendertone profitable to sell on Amazon United Kingdom?

The niche generates £255K/yr across 30 tracked products. 2 of 6 products launched in the last 360 days are still selling. 90-day search growth is -12.0%. Flapen's verdict: Worth a look (54/100).

How competitive is the slendertone niche?

19 brands and 36 sellers compete. The top 5 products take 45% of clicks and top 5 brands hold 63% of demand.

What do buyers complain about in slendertone?

Top complaints mined from reviews: Functionality-Overall, Durability, Quality-Overall. The return rate is 2.5%.

When does demand for slendertone peak?

Demand peaks in Jan–Feb; the busiest month runs 3.1× the quietest.

What does it cost to enter the slendertone niche?

Listings span £16.71–£166.81; the average listing price is £59.34 (sweet spot $15–$100). The average incumbent carries 4,586 reviews — the moat a new listing must climb.

slendertone

Worth a look

Shows beatable incumbent ratings (4.1★), but soft demand (-12.0% this quarter) keeps it on the watch list.

Quality gap

Great4.1★

avg incumbent rating — lower means beatable quality

Avg price

Great£59.34

avg listing price — sweet spot $15–$100

Brand share

Good63%

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

Competition

Good45%

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

Returns

Good2.5%

return rate — above 5% kills the launch gate

Price range

Good£16.71–£166.81

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

Market size

Okay£255K

£255K/yr · 181K searches

Conversion

Okay2.4%

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

Review moat

Bad4,586.47

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-12.0%

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

Signals No Dominant Brand High Price

According to Flapen's Amazon United Kingdom niche tracking, slendertone is a £255K/yr Amazon United Kingdom market (181K searches/yr). The top 5 brands hold 63% of demand. Demand peaks in Jan–Feb. Verdict: Worth a look — 54/100.

Data updated Jul 24, 2026 · scored weekly · How we score niches

slendertone market data

Units sold / yr: 4K–5K; avg 0–100/product
Revenue / yr: £237K–£297K; units × avg price
Conversion rate: 2.4%
Avg BSR: #175
Page quality: 0%
Prime: 83%
Sponsored: 97%
Out of stock: 16.8%
Avg brand age: 34 months
Avg seller age: 169 days

Competition & brand share

The top 5 products take 45% of clicks — established leaders, but buyers still shop beyond them.

Brands

19 falling

Sellers

Top-5 brand share

63%

Top 20: 100%

Top-5 click share

45%

Top 20: 87%

Open market

32%

EVOLAND18%
AUVON18%
Slendertone11%
SLENDERTONE9%
iWarmbase7%
ABFLEX6%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -12.0% search growth over the last 90 days.

Peak months: Jan, Feb · busiest ÷ quietest = 3.1×

Open Trend

Top slendertone search terms

ems muscle stimulator64K/yr -6.8%1.6% conv.
slendertone34K/yr -2.3%1.5% conv.
muscle stimulator22K/yr -29.2%1.7% conv.
ems16K/yr +13.5%0.9% conv.
slendertone belt22K/yr -43.9%1.4% conv.
slendertone abs belt4K/yr +170.7%1.9% conv.
electric muscle stimulator6K/yr +1.2%2.1% conv.
muscle stimulater machine14K/yr -98.3%0.0% conv.

All search terms

Top slendertone 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★)1 product missing review or click data not plotted

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£48.844.6★2,118 rev

AUVON Dual Channel TENS Machine for Pain Relief TENS Unit Muscle Stimulator with 20 Modes 2 and 2x4 TENS Pads Replacement

AUVON£20.414.6★14,827 rev

Slendertone Evolve Abs Trainer EMS Training Device Abdominal Muscle Trainer Abdominal Trainer with 12 Programs and 100 Intensities Portable Muscle Stimulator for Abdomen Fitness Training

SLENDERTONE£147.113.6★199 rev

ABFLEX Ab Toning Belt and Ab Stimulator for Slender Toned Stomach Muscles Remote for Quick and Easy Adjustments 99 Intensity Levels and 10 Workouts for Fast Results Workout Belt

ABFLEX£30.884.1★11,895 rev

EMS Muscle Stimulator ABS Trainer Abdominal Muscle Toner Electronic Workout Home Fitness Device with 8 Modes 29 Intensities 4 Machines 4 Patches 12 Gel For Abdominal/Arm/Leg/Hip Training-Blue

Mexlyca£18.323.7★82 rev

Newest

by launch date

iWarmbase EMS Muscle Stimulator Portable Electric ABS Stimulator with 6 Modes & 19 Intensities Six Pack Machine AB Trainer Full Body Arm/Legs/Hip for Men Women

iWarmbase£22.990 rev

2mo ago

iWarmbase EMS Muscle Stimulator

iWarmbase£22.092 rev

3mo ago

UIOF Ems Muscle Stimulator ABS Trainer Muscle Stimulator

UIOF£24.106 rev

4mo ago

EMS Muscle Stimulator ABS Trainer Abdominal Muscle Toner Electronic Workout Home Fitness Device with 8 Modes 29 Intensities 4 Machines 4 Patches 12 Gel For Abdominal/Arm/Leg/Hip Training-Blue

Mexlyca£18.3282 rev

12mo ago

TENS Machine for Pain Relief GHTENS Rechargeable EMS Unit with 5 Modes 80 Programs Dual Channels & 8 Electrode Pads for Back Sciatica Shoulder Pain

GHTENS£24.601,212 rev

1y ago

What buyers say about slendertone

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

What buyers love

Value For Money15%

“Good for the money”

Quality-Overall14%

“Really high quality device”

Ease Of Use13%

“Delivered quickly easy to use”

Muscle Pain Relief6%

“It relaxes the muscles”

Advertised Vs Actual Product5%

“Seems to work as it should”

Joint Pain5%

“Gave relief to my knees after the first use”

Efficiency5%

“it does its job well”

Battery Life4%

“long lasting battery”

Strength3%

“seems solidly built”

Charging2%

“holds it's charge very well”

What buyers complain about

Functionality-Overall10%

“I didnt believe in its effectiveness either”

Durability9%

“Broke and started shocking me after a few months”

Quality-Overall7%

“Really cheap and low quality product for the price”

Instructions/User Manual/Troubleshooting5%

“the instructions are poor”

Charging5%

“Doesnt charge or turn on”

Size-Overall5%

“Dont get me wronf the fit is good put the functio s dont do the job”

Adhesion/Stickiness5%

“Pads very sticky”

Strength3%

“it is very flimsy”

Battery Life3%

“the battery life is practically none existent”

Allergies3%

“But my lord it really does make you itch all over”

Top return reasons

Functionality-Overall32%

Defective Material/Parts9%

Joint Pain6%

Size-Overall6%

Advertised Vs Actual Product5%

Charging4%

Adhesion/Stickiness3%

Ease Of Use3%

Compatibility-Overall3%

Instructions/User Manual/Troubleshooting3%

Common questions

Is slendertone profitable to sell on Amazon United Kingdom?: The niche generates £255K/yr across 30 tracked products. 2 of 6 products launched in the last 360 days are still selling. 90-day search growth is -12.0%. Flapen's verdict: Worth a look (54/100).
How competitive is the slendertone niche?: 19 brands and 36 sellers compete. The top 5 products take 45% of clicks and top 5 brands hold 63% of demand.
What do buyers complain about in slendertone?: Top complaints mined from reviews: Functionality-Overall, Durability, Quality-Overall. The return rate is 2.5%.
When does demand for slendertone peak?: Demand peaks in Jan–Feb; the busiest month runs 3.1× the quietest.
What does it cost to enter the slendertone niche?: Listings span £16.71–£166.81; the average listing price is £59.34 (sweet spot $15–$100). The average incumbent carries 4,586 reviews — the moat a new listing must climb.