Skip to content
39

white window pens for glass

Skip it

Prices mostly outside the sweet spot ($2.68–$7.71) — this niche doesn't clear our bar today.

Market size 2Growth 18Conversion 95Competition 24Returns 98Price range 0Avg price 14Brand share 49Review moat 32Quality gap 60

Returns

Incredible0.4%

return rate — above 5% kills the launch gate

Conversion

Great11.9%

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Brand share

Okay76%

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

Review moat

Okay3,303.36

avg incumbent reviews — the moat a new listing must climb

Competition

Bad71%

top-5 click share — a locked-up shelf

Growth

Bad-14.7%

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

Avg price

Bad£4.87

avg listing price — sweet spot $15–$100

Market size

Bad£9K

£9K/yr · 15K searches

Price range

Bad£2.68–£7.71

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

According to Flapen's Amazon United Kingdom niche tracking, white window pens for glass is a £9K/yr Amazon United Kingdom market (15K searches/yr). The top 5 brands hold 76% of demand. Demand peaks in Nov–Dec. Verdict: Skip it — 39/100.

Data updated Jul 27, 2026 · scored weekly · How we score niches

white window pens for glass market data

Units sold / yr
2K–3K
avg 0–100/product
Revenue / yr
£10K–£12K
units × avg price
Conversion rate
11.9%
Avg BSR
#68
Page quality
0%
Prime
91%
Sponsored
73%
Out of stock
4.4%
Avg brand age
52 months
Avg seller age
190 days

Competition & brand share

The top 5 products capture 71% of clicks — a locked-up shelf that new listings rarely crack.

Brands

10 rising

Sellers

15

Top-5 brand share

76%

Top 20: 100%

Top-5 click share

71%

Top 20: 100%

Open market

17%

  • STATIONERY ISLAND31%
  • ARTISTRO19%
  • AOSUCO9%
  • RAINBOW CHALK MARKERS LTD9%
  • Sufune8%
  • Hueritfly7%
  • Open — no brand owns it (4 brands, 17%)

Demand & seasonality

Weekly Amazon search volume, last 77 weeks — -14.7% search growth over the last 90 days.
3K2KSpike '25Prime Day '25Black Friday '25Spike '26FebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun

Peak months: Nov, Dec · busiest ÷ quietest = 24.1×

Top white window pens for glass search terms

  • white glass pen5K/yr
  • white chalk pens for windows and glass2K/yr
  • white window pen4K/yr
  • white window pens for glass5K/yr
All search terms

Top white window pens for glass 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%£89020%£2K30%£3K40%£4K101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 11 tracked products in this niche — three views at once, no toggling.

What buyers say about white window pens for glass

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

What buyers love

Quality-Overall23%

“Great quality, useful idea to stay safe regarding allergies/intolerance”

Ease Of Use11%

“Easy to use”

Advertised Vs Actual Product11%

“Does the job”

Writing Experience10%

“Easy to write with”

Color7%

“Vibrant colours”

Pen/Pencil Quality6%

“Good set of pens”

Nib/Tip Quality6%

“Two different nib sizes are really useful”

Efficiency4%

“Great item work very well”

Value For Money4%

“Amazing value”

Size-Overall2%

“Pack is a great size”

What buyers complain about

Functionality-Overall21%

“no works well”

Writing Experience11%

“it doesnt flow constantly when writing”

Dry/Empty Ink10%

“Pen came dry does not work”

Moist/Dry7%

“arrived dry and looks to have already used so was not able to use unfortunately”

Quality-Overall7%

“the overall quality of the two functioning ones is low”

Nib/Tip Quality5%

“Used two, unfortunately one of nibs disappeared off one of them after being in my pocket”

Ease Of Cleaning4%

“Rubs off too easily”

Compatibility-Overall4%

“Not suitable for freezer bags”

Ink Leakage4%

“Ink isnt as fluid as I hoped”

Value For Money4%

“Overpriced”

Top return reasons

Functionality-Overall38%
Writing Experience12%
Dry/Empty Ink5%
Ink Refill5%
Color4%
Compatibility-Overall4%
Value For Money4%
Size-Overall4%
Leak-Proof3%
Drying Time2%

Common questions

Is white window pens for glass profitable to sell on Amazon United Kingdom?
The niche generates £9K/yr across 11 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -14.7%. Flapen's verdict: Skip it (39/100).
How competitive is the white window pens for glass niche?
10 brands and 15 sellers compete. The top 5 products take 71% of clicks and top 5 brands hold 76% of demand.
What do buyers complain about in white window pens for glass?
Top complaints mined from reviews: Functionality-Overall, Writing Experience, Dry/Empty Ink. The return rate is 0.4%.
When does demand for white window pens for glass peak?
Demand peaks in Nov–Dec; the busiest month runs 24.1× the quietest.
What does it cost to enter the white window pens for glass niche?
Listings span £2.68–£7.71; the average listing price is £4.87 (sweet spot $15–$100). The average incumbent carries 3,303 reviews — the moat a new listing must climb.