waterproof pens
Skip itPrices mostly outside the sweet spot ($1.56–$13.82) — this niche doesn't clear our bar today.
Returns
Incredible0.1%return rate — above 5% kills the launch gate
Conversion
Incredible12.5%search→purchase rate — share of searches ending in a sale
Competition
Okay55%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Review moat
Okay3,288.61avg incumbent reviews — the moat a new listing must climb
Growth
Bad-7.5%90-day search growth — must beat 0% to launch
Brand share
Bad92%top-5 brand share — brand-locked demand
Avg price
Bad£6.55avg listing price — sweet spot $15–$100
Market size
Bad£33K£33K/yr · 40K searches
Price range
Bad£1.56–£13.82cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, waterproof pens is a £33K/yr Amazon United Kingdom market (40K searches/yr). The top 5 brands hold 92% of demand. Verdict: Skip it — 39/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
waterproof pens market data
- Units sold / yr
- 5K–6K
- avg 100–250/product
- Revenue / yr
- £33K–£39K
- units × avg price
- Conversion rate
- 12.5%
- Avg BSR
- #203
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 48%
- Out of stock
- 0.0%
- Avg brand age
- 49 months
- Avg seller age
- 168 days
Competition & brand share
The top 5 products take 55% of clicks — established leaders, but buyers still shop beyond them.Brands
10 falling
Sellers
113
Top-5 brand share
92%
Top 20: 100%
Top-5 click share
55%
Top 20: 96%
Open market
6%
- STAEDTLER69%
- Sharpie10%
- meukcez6%
- Generic5%
- SAKEYR2%
- Aurobliss2%
- Open — no brand owns it (4 brands, 6%)
Demand
Weekly Amazon search volume, last 15 weeks — -7.5% search growth over the last 90 days.Top waterproof pens search terms
- staedtler lumocolor permanent14K/yr
- waterproof pens6K/yr
- lumocolor permanent pens6K/yr
- waterproof marker pen5K/yr
- indelible marker pen waterproof outdoor4K/yr
- staedtler permanent marker fine3K/yr
- staedtler lumocolor permanent fine3K/yr
Top waterproof pens 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.
All 23 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
STAEDTLER 318 WP4 Lumocolor Permanent Pen Fine Line Width 0.6mm - Assorted Colours (Pack of 4)
STAEDTLER£4.174.7★5,202 rev
STAEDTLER 318-9 Lumocolor Permanent Pen Fine Line Width 0.6mm - Black (Box of 10)
STAEDTLER£10.894.7★2,962 rev
STAEDTLER Lumocolor Fine Permanent Marker Pens - Waterproof Smudge Resistant Quick Dry CD DVD OHP - Black - Pack of 3
STAEDTLER£5.054.7★380 rev
10 Pcs Fine Point Black Permanent Marker Pens Marker Pen Quick Drying & Waterproof Pen Set for Doodling Marking on Plastic Wood Metal Glass Ideal for Office School Arts & Crafts Supplies (0.6mm)
meukcez£5.834.3★168 rev
STAEDTLER Lumocolor Fine Permanent Marker Pens - Waterproof Smudge Resistant Quick Dry CD DVD OHP - Black - Pack of 5
STAEDTLER£7.424.7★134 rev
Newest
by launch date
HowseHold Garden Marker Pens Pack of 2 1mm Fine Tip Waterproof Plant Label Pens for Outdoor Use Permanent Ink for Pots Tags Seeds and Gardening
HowseHold£5.089 rev
12 Pack Permanent Marker Pens 0.6mm Fine Tip Waterproof Markers Quick Dry Fine Point Felt Tip Pens Multi Surface Marker for Plastic Metal Glass Wood Paper Office School Art Supplies (Black)
Nutfoam£5.092 rev
12 Pcs Permanent Marker Pens 0.6mm Fine Tip Markers Quick Drying & Waterproof Fineliner Pens Felt Tip Pen for Doodling & Marking on Plastic Wood Metal Glass Ceramic Paper(4 Colors)
Generic£5.8962 rev
12 Pcs Permanent Marker Pens Black 0.6mm Fine Tip Markers Quick Drying & Waterproof Fineliner Pens Felt Tip Pen for Doodling & Marking on Plastic Wood Metal Glass Ceramic Paper
Generic£5.4162 rev
Artline Pack of 2 Garden Marker Pens (Black). Garden Markers for Plants Pots or Tools. UV-Resistant Waterproof Pens for Outdoors - Genuine Fine Permanent Markers & Marker Pens
Artline£7.141,000 rev
Trending
90-day click momentumHowseHold Garden Marker Pens Pack of 2 1mm Fine Tip Waterproof Plant Label Pens for Outdoor Use Permanent Ink for Pots Tags Seeds and Gardening
HowseHold£5.083.2★
12 Pack Permanent Marker Pens 0.6mm Fine Tip Waterproof Markers Quick Dry Fine Point Felt Tip Pens Multi Surface Marker for Plastic Metal Glass Wood Paper Office School Art Supplies (Black)
Nutfoam£5.095.0★
12 Pcs Permanent Marker Pens 0.6mm Fine Tip Markers Quick Drying & Waterproof Fineliner Pens Felt Tip Pen for Doodling & Marking on Plastic Wood Metal Glass Ceramic Paper(4 Colors)
Generic£5.894.3★
STAEDTLER 313 WP8 Lumocolor Permanent Pen Superfine Line Width 0.4mm - Assorted Colours (Pack of 8)
STAEDTLER£13.804.6★
STAEDTLER Lumocolor Permanent Marker Pen Smudge-Proof and Waterproof on Almost All Surfaces line Width F 0.6 mm refillable Long Service Life 5 Black Universal pens 318-9X
STAEDTLER£8.264.7★
What buyers say about waterproof pens
What buyers praise and complain about, mined from review topics.What buyers love
“I love their consistent quality”
“Good value for the money”
“Exactly as advertised”
“Nice writers”
“Great set of pens”
“Sharpie pens”
“Easy to use”
“This 0.6 mm fine tip is perfect for my needs”
“Seems to be durable and works well”
“Good for drawing or writing”
What buyers complain about
“Does not work”
“they dry up quickly”
“Very poor performance”
“Bit more expensive than cheaper brands”
“don't dry out to quickly”
“out of water all day didnt help”
“Ink is dry”
“Arrived dry and don't write as a result, not the quality I normally expect from the brand”
“doesn't last long”
“don't store them pointing up or down as that causes the ink to pool”
Top return reasons
Common questions
- Is waterproof pens profitable to sell on Amazon United Kingdom?
- The niche generates £33K/yr across 23 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is -7.5%. Flapen's verdict: Skip it (39/100).
- How competitive is the waterproof pens niche?
- 10 brands and 113 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 92% of demand.
- What do buyers complain about in waterproof pens?
- Top complaints mined from reviews: Functionality-Overall, Moist/Dry, Quality-Overall. The return rate is 0.1%.
- What does it cost to enter the waterproof pens niche?
- Listings span £1.56–£13.82; the average listing price is £6.55 (sweet spot $15–$100). The average incumbent carries 3,289 reviews — the moat a new listing must climb.