Is window markers profitable to sell on Amazon United States?

The niche generates $1.3M/yr across 24 tracked products. 3 of 5 products launched in the last 360 days are still selling. 90-day search growth is +132.8%. Flapen's verdict: Launch it (68/100).

How competitive is the window markers niche?

19 brands and 37 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 70% of demand.

What do buyers complain about in window markers?

Top complaints mined from reviews: Color, Functionality-Overall, Quality-Overall. The return rate is 1.6%.

When does demand for window markers peak?

Demand peaks in May–Jun–Aug–Nov; the busiest month runs 3.9× the quietest.

What does it cost to enter the window markers niche?

Listings span $4.26–$26.90; the average listing price is $13.73 (sweet spot $15–$100). The average incumbent carries 4,457 reviews — the moat a new listing must climb.

window markers

Launch it

A $1.3M/yr market growing +132.8% this quarter with returns at 1.6% — clears our launch bar.

Growth

Incredible+132.8%

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

Conversion

Great10.1%

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

Market size

Great$1.3M

$1.3M/yr · 936K searches

Returns

Great1.6%

return rate — above 6% kills the launch gate

Avg price

Good$13.73

avg listing price — sweet spot $15–$100

Brand share

Good70%

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

Price range

Good$4.26–$26.90

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

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Competition

Okay59%

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

Review moat

Bad4,456.96

avg incumbent reviews — the moat a new listing must climb

According to Flapen's Amazon United States niche tracking, window markers is a $1.3M/yr Amazon United States market (936K searches/yr). The top 5 brands hold 70% of demand. Demand peaks in May–Jun–Aug–Nov. Verdict: Launch it — 68/100.

Data updated Jul 10, 2026 · scored weekly · How we score niches

Market data

Units sold / yr: 100K–125K; avg 3,000–4,000/product
Revenue / yr: $1.4M–$1.7M; units × avg price
Launch success: 60%; 3 of 5 new (360d)
Conversion rate: 10.1%
Avg BSR: #105
Page quality: 0%
Prime: 100%
Sponsored: 92%
Out of stock: 0.0%
Avg brand age: 51 months
Avg seller age: 160 days

Competition

The top 5 products take 59% of clicks — established leaders, but buyers still shop beyond them.

Brands

19 rising

Sellers

Top-5 brand share

70%

Top 20: 100%

Top-5 click share

59%

Top 20: 96%

Open market

25%

Celepen26%
SRUOLOC16%
CHALKY CROWN13%
Bandle B.9%
GOTIDEAL5%
ALEMHOP5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +132.8% search growth over the last 90 days.

Peak months: May, Jun, Aug, Nov · busiest ÷ quietest = 3.9×

Open Trend

Product shelf

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

Celepen Window Chalk Markers for Cars Glass Washable 8 Colors Jumbo Liquid Chalk Marker Pens with 10mm 3 in 1 Nib Wide Tip Chalkboard Markers Car Window Paint Pen for Auto Mirror Poster

Celepen$13.324.6★1,086 rev

Window Chalk Markers for Glass Washable 10 Colors Jumbo Liquid Chalk Marker with 10mm 3 in 1 Nib Thick Wide Tips Big Chalkboard Markers Car Paint Pen for Auto Bistro Mirror Poster Blackboards

SRUOLOC$15.314.5★1,147 rev

Bold Chalk Markers - Dry Erase Marker Pens - Liquid Chalk Markers for Chalkboards Signs Windows Blackboard Glass Mirrors - Chalkboard Marker with Reversible Tip (8 Pack) - (Multicolored 6mm)

CHALKY CROWN$7.614.5★36,059 rev

Bandle B. Chalk Markers - 8 Vibrant Erasable Non-Toxic Water-Based Reversible Tips. For Glass or Chalkboard Markers for Businesses Restaurants Liquid Drawing Chalk (Vibrant 6mm)

Bandle B.$7.164.5★27,492 rev

Window Chalk Markers for Cars Glass Washable 10 Colors Jumbo Liquid Chalk Marker Pens with 10mm 3 in 1 Nib Wide Tips Big Chalkboard Markers Car Window Paint Pens for Auto Bistro Mirror Poster

Celepen$15.704.4★256 rev

Newest

by launch date

Luvano Window Chalk Markers for Glass Washable 8mm 3-in-1 Jumbo Liquid Chalk Marker Thick Nib Erasable Car Paint Pens for Auto Window Mirror LED Board Bistro & Poster Art - 8 Colors

Luvano$7.2031 rev

1mo ago

AYSIP Window Chalk Markers for Blackboard10 Colors Washable Glass Jumbo Liquid Chalk Marker with 10mm 3 in 1 Nib Thick Wide Tips Big Chalkboard Markers Car Paint Pen Auto Mirror Bistro Poster

AYSIP$13.6439 rev

2mo ago

GOTIDEAL 10mm Window Markers Chalk Markers for Blackboard Washable Car Marker for Chalkboard Glass Mirror Jumbo Thick Tip Window paint markers Erasable for Wedding Married Painting Menus(8 Colors

GOTIDEAL$13.4354 rev

5mo ago

OLINGYOU Window Chalk Markers for Cars Glass Washable 8 Colors Liquid Chalk Marker Pens with 7mm 2 in 1 Nib Wide Tips Big Chalkboard Markers Car Window pens

OLINGYOU$9.12152 rev

10mo ago

Window Chalk Markers for Glass Washable 8 Colors Jumbo Liquid Chalk Marker Thick with 7mm 3 in 1 Nib Wide Tip Big Chalkboard Markers Car Paint Pen for Acrylic Board LED Board Auto Mirror Poster

ALEMHOP$7.16990 rev

11mo ago

Reviews

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

What buyers love

Color28%

“Bright Colors”

Quality-Overall9%

“Great Variety”

Ease Of Use7%

“Easy to Use”

Ease Of Cleaning7%

“Easy to clean off”

Pen/Pencil Quality5%

“Good set of markers”

Writing Experience4%

“Smooth writing”

Value For Money4%

“Great deal”

Brightness/Shine/Glow3%

“Appearance very bright”

Efficiency3%

“Worked great on the window for our retail”

Advertised Vs Actual Product3%

“Better than expected”

What buyers complain about

Color12%

“very dull color”

Functionality-Overall8%

“Does not work well at all”

Quality-Overall7%

“Inconsistent Quality”

Leak-Proof5%

“leaked everywhere all the time”

Ease Of Use4%

“Impossible to use”

Durability4%

“ran out quickly”

Value For Money3%

“Not worth the money IMO”

Dry/Empty Ink3%

“Dried out”

Drying Time3%

“the drying time is awful”

Nib/Tip Quality3%

“Swapping the tip isnt ideal”

Top return reasons

Functionality-Overall15%

Value For Money9%

Color8%

Size-Overall8%

Ink Refill8%

Leak-Proof6%

Advertised Vs Actual Product6%

Dry/Empty Ink5%

Writing Experience4%

Display Colors3%

Common questions

Is window markers profitable to sell on Amazon United States?: The niche generates $1.3M/yr across 24 tracked products. 3 of 5 products launched in the last 360 days are still selling. 90-day search growth is +132.8%. Flapen's verdict: Launch it (68/100).
How competitive is the window markers niche?: 19 brands and 37 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 70% of demand.
What do buyers complain about in window markers?: Top complaints mined from reviews: Color, Functionality-Overall, Quality-Overall. The return rate is 1.6%.
When does demand for window markers peak?: Demand peaks in May–Jun–Aug–Nov; the busiest month runs 3.9× the quietest.
What does it cost to enter the window markers niche?: Listings span $4.26–$26.90; the average listing price is $13.73 (sweet spot $15–$100). The average incumbent carries 4,457 reviews — the moat a new listing must climb.

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window markers

Market data

Competition

Demand & seasonality

Product shelf

Top sellers

Newest

Trending

Reviews

What buyers love

What buyers complain about

Top return reasons

Common questions

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