Is 18.5 inch portable monitor profitable to sell on Amazon United Kingdom?

The niche generates £80K/yr across 33 tracked products. 7 of 14 products launched in the last 360 days are still selling. 90-day search growth is -27.9%. Flapen's verdict: Skip it (43/100).

How competitive is the 18.5 inch portable monitor niche?

17 brands and 28 sellers compete. The top 5 products take 39% of clicks and top 5 brands hold 56% of demand.

What do buyers complain about in 18.5 inch portable monitor?

Top complaints mined from reviews: Quality-Overall, Durability, Touch Screen. The return rate is 3.8%.

What does it cost to enter the 18.5 inch portable monitor niche?

Listings span £52.80–£220.23; the average listing price is £126.74 (sweet spot $15–$100). The average incumbent carries 1,642 reviews — the moat a new listing must climb.

18.5 inch portable monitor

Skip it

Soft demand (-27.9% this quarter) — this niche doesn't clear our bar today.

Brand share

Great56%

top-5 brand share — no brand owns this niche

Competition

Great39%

top-5 click share — an open shelf

Avg price

Good£126.74

avg listing price — sweet spot $15–$100

Review moat

Okay1,642.45

avg incumbent reviews — the moat a new listing must climb

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Returns

Okay3.8%

return rate — above 5% kills the launch gate

Conversion

Okay2.7%

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

Price range

Okay£52.80–£220.23

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

Market size

Bad£80K

£80K/yr · 24K searches

Growth

Bad-27.9%

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

Signals High Price

According to Flapen's Amazon United Kingdom niche tracking, 18.5 inch portable monitor is a £80K/yr Amazon United Kingdom market (24K searches/yr). The top 5 brands hold 56% of demand. Verdict: Skip it — 43/100.

Data updated Jul 21, 2026 · scored weekly · How we score niches

18.5 inch portable monitor market data

Units sold / yr: 250–500; avg 0–100/product
Revenue / yr: £32K–£63K; units × avg price
Conversion rate: 2.7%
Avg BSR: #288
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 13.7%
Avg brand age: 22 months
Avg seller age: 161 days

Competition & brand share

Clicks spread well past the top 5 (39% combined) — an open shelf where new products get seen.

Brands

17 rising

Sellers

Top-5 brand share

56%

Top 20: 100%

Top-5 click share

39%

Top 20: 87%

Open market

36%

UPERFECT23%
EVICIV9%
MOMODS9%
COOLHOOD8%
Yodoit8%
CUIUIC7%

Demand

Weekly Amazon search volume, last 23 weeks — -27.9% search growth over the last 90 days.

Open Trend

Top 18.5 inch portable monitor search terms

18.5 inch portable monitor7K/yr -37.6%2.3% conv.
large portable monitor5K/yr -23.5%0.9% conv.
18 inch portable monitor4K/yr +7.7%2.1% conv.
portable monitor 20 inch4K/yr -24.0%0.9% conv.
portable monitor 18 inch4K/yr -48.6%1.5% conv.

All search terms

Top 18.5 inch portable monitor 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

UPERFECT Portable Monitor 18.5 inch 120HZ 125% sRGB w/VESA & Kickstand

UPERFECT£123.604.5★1,751 rev

MOMODS 18.5 Inch Portable Monitor - 120Hz 1080P FHD Portable Gaming Monitor Second Screen for Laptop with IPS HDR USB-C & HDMI Travel Monitor with Speaker VESA Compatible

MOMODS£113.374.4★621 rev

Yodoit 18.5 100Hz Portable Monitor FHD 1920x1080P IPS Second External Display Laptop Screen Extender | USB-C & HDMI Connectivity Built-in Speakers with Kickstand for Laptop PC Mac PS3/4/5 Xbox

Yodoit£91.904.3★7,138 rev

CUIUIC 18.5 Inch Portable Monitor 120Hz 1080P IPS Portable Screen for Laptop Travel Monitor with HDR 100% sRGB VESA Second Screen for Laptop PS5 Xbox Phone

CUIUIC£123.024.3★2,493 rev

cocopar Portable Monitor 18.5 Inch 1080P FHD 100Hz 120% sRGB Travel Monitor with Speaker HDMI USB-C Second Screen for Laptop MacBook Surface PC Xbox PS4/5 VESA Mountable with KickStand

cocopar£122.494.8★2,845 rev

Newest

by launch date

Blackview 24 Large Portable Monitor 100Hz for Work Home Office Game 1080P FHD IPS Laptop Screen Extender with Rotating Stand & VESA USB-C HDMI Plug-Play for Mac/Windows/PS/Switch/Xbox

Blackview£218.126 rev

3mo ago

VisionOwl Large Portable Monitor 18.5 Inch 1080P FHD 100Hz Laptop Monitor 125% sRGB HDMI USB-C Portable Screen for Laptop Mac Surface PC PS5 Xbox Built-in Kickstand & Speakers VESA Mountable

VisionOwl£117.311,237 rev

5mo ago

Showscren 21.5 Inch Portable Monitor 1080P FHD Large Screen External Display VESA Mountable HDMI USB-C Portable Second Screen for Work Gaming Travel Laptop PC Phone PS5 Xbox

Showscren£79.8010 rev

6mo ago

Kenowa 2K USB-C Portable Monitor 23.8 inch QHD 2560x1440P FreeSync Large Gaming Monitor Dual Speakers&Adjustable stand&VESA with Type-C/HDMI port External Second Screen for PC/Mac/Laptop/Phone/PS3/4

Kenowa£136.972 rev

7mo ago

EVICIV 21.5 100Hz QLED Portable Monitor 130% sRGB 400Nits HDR Freesync Travel Gaming Second Screen w/VESA USB-C HDMI OTG External Display Compatible with PS5/Xbox/Switch/Steam Deck/Laptop/PC/Phone

EVICIV£144.11276 rev

8mo ago

What buyers say about 18.5 inch portable monitor

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

What buyers love

Display Resolution14%

“Screen is perfect”

Portability14%

“Light and portable”

Quality-Overall13%

“Excellent product”

Value For Money12%

“Excellent value for money”

Weight Light8%

“Good clear screen and lightweight”

Assembly/Installation6%

“Very easy to install”

Ease Of Use4%

“easy to operate”

Connectivity-Overall3%

“Easy to connect up”

Size-Overall3%

“Good size for on the go”

Display Brightness3%

“Brightness can be adjusted easily”

What buyers complain about

Quality-Overall8%

“Not the best quality”

Durability6%

“Broke really easily and quickly”

Touch Screen5%

“the screen is broken”

Audio Quality5%

“Speakers are a bit tinny”

Compatibility-Overall5%

“Doesnt work with different cables”

Connectivity-Overall4%

“Connection was unstable”

Touch/Button Controls4%

“Recently had an issue with one of the buttons”

Brightness/Shine/Glow3%

“Low brightness”

Display Resolution2%

“Poor screen quality”

Product Condition2%

“Looked like a repackaged return”

Top return reasons

Size-Overall15%

Compatibility-Overall14%

Connectivity-Overall10%

Functionality-Overall9%

Touch Screen6%

Quality-Overall5%

Display Resolution5%

Display Brightness4%

Brightness/Shine/Glow4%

Defective Material/Parts2%

Common questions

Is 18.5 inch portable monitor profitable to sell on Amazon United Kingdom?: The niche generates £80K/yr across 33 tracked products. 7 of 14 products launched in the last 360 days are still selling. 90-day search growth is -27.9%. Flapen's verdict: Skip it (43/100).
How competitive is the 18.5 inch portable monitor niche?: 17 brands and 28 sellers compete. The top 5 products take 39% of clicks and top 5 brands hold 56% of demand.
What do buyers complain about in 18.5 inch portable monitor?: Top complaints mined from reviews: Quality-Overall, Durability, Touch Screen. The return rate is 3.8%.
What does it cost to enter the 18.5 inch portable monitor niche?: Listings span £52.80–£220.23; the average listing price is £126.74 (sweet spot $15–$100). The average incumbent carries 1,642 reviews — the moat a new listing must climb.