---
title: "Waterproof Pens — £33K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/home-garden/waterproof-pens"
last_updated: "2026-07-31T19:47:13.187Z"
locale: en
meta:
description: "Niche score 39/100 · £33K/yr market · 40K searches/yr · £6.55 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 39/100 · £33K/yr market · 40K searches/yr · £6.55 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Waterproof Pens — £33K/yr Amazon UK Niche (2026) - Flapen"
---
# **waterproof pens**
**Skip it**
Prices mostly outside the sweet spot ($1.56–$13.82) — this niche doesn't clear our bar today.
Market size 8Growth 21Conversion 95Competition 50Returns 99Price range 0Avg price 18Brand share 21Review moat 32Quality gap 35
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****12.5%**
search→purchase rate — share of searches ending in a sale
**Competition**
**Okay****55%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****3,288.61**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-7.5%**
90-day search growth — must beat 0% to launch
**Brand share**
**Bad****92%**
top-5 brand share — brand-locked demand
**Avg price**
**Bad****£6.55**
avg listing price — sweet spot $15–$100
**Market size**
**Bad****£33K**
£33K/yr · 40K searches
**Price range**
**Bad****£1.56–£13.82**
cheapest 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 ~~](https://flapen.com/research/methodology)
## **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.
900700Spike '26Apr '26Apr '26May '26May '26Jun '26Jun '26Jul '26Jul '26
[**Open Trend **](https://flapen.com/research/uk/home-garden/waterproof-pens/trend)
## **Top waterproof pens search terms**
- **staedtler lumocolor permanent**14K/yr+2.5%11.3% conv. - **waterproof pens**6K/yr-0.7%1.9% conv. - **lumocolor permanent pens**6K/yr-17.4%15.6% conv. - **waterproof marker pen**5K/yr-14.4%7.4% conv. - **indelible marker pen waterproof outdoor**4K/yr+8.5%14.3% conv. - **staedtler permanent marker fine**3K/yr+0.0%15.6% conv. - **staedtler lumocolor permanent fine**3K/yr-56.5%15.5% conv. [**All search terms **](https://flapen.com/research/uk/home-garden/waterproof-pens/search-terms)
## **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.
0%10%£3K20%£7K30%£10K40%£13K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 23 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**STAEDTLER 318 WP4 Lumocolor Permanent Pen Fine Line Width 0.6mm - Assorted Colours (Pack of 4)**STAEDTLER**£4.17**4.7★5,202 rev](https://www.amazon.co.uk/dp/B000SHT14G) [2**STAEDTLER 318-9 Lumocolor Permanent Pen Fine Line Width 0.6mm - Black (Box of 10)**STAEDTLER**£10.89**4.7★2,962 rev](https://www.amazon.co.uk/dp/B000SHQBA8) [3**STAEDTLER Lumocolor Fine Permanent Marker Pens - Waterproof Smudge Resistant Quick Dry CD DVD OHP - Black - Pack of 3**STAEDTLER**£5.05**4.7★380 rev](https://www.amazon.co.uk/dp/B08N139LKG) [4**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**£5.83**4.3★168 rev](https://www.amazon.co.uk/dp/B0CZ49R3D7) [5**STAEDTLER Lumocolor Fine Permanent Marker Pens - Waterproof Smudge Resistant Quick Dry CD DVD OHP - Black - Pack of 5**STAEDTLER**£7.42**4.7★134 rev](https://www.amazon.co.uk/dp/B0B7JD3HTM)
**~~View all top sellers →~~**
### **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**£5.08**9 rev3mo ago](https://www.amazon.co.uk/dp/B0GY518893) [**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**£5.09**2 rev4mo ago](https://www.amazon.co.uk/dp/B0GSW25W5H) [**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**£5.89**62 rev6mo ago](https://www.amazon.co.uk/dp/B0GF82C6HY) [**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**£5.41**62 rev10mo ago](https://www.amazon.co.uk/dp/B0FQCC3LHX) [**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**£7.14**1,000 rev1y ago](https://www.amazon.co.uk/dp/B0F6V4RNMR)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**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**£5.08**3.2★**▲ 300%**](https://www.amazon.co.uk/dp/B0GY518893) [**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**£5.09**5.0★**▲ 297%**](https://www.amazon.co.uk/dp/B0GSW25W5H) [**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**£5.89**4.3★**▲ 214%**](https://www.amazon.co.uk/dp/B0GF82C6HY) [**STAEDTLER 313 WP8 Lumocolor Permanent Pen Superfine Line Width 0.4mm - Assorted Colours (Pack of 8)**STAEDTLER**£13.80**4.6★**▲ 177%**](https://www.amazon.co.uk/dp/B0007OEDQQ) [**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**£8.26**4.7★**▲ 105%**](https://www.amazon.co.uk/dp/B0B7R74FZB)
**~~View all trending →~~**
## **What buyers say about waterproof pens**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**17%
*“I love their consistent quality”*
**Value For Money**13%
*“Good value for the money”*
**Advertised Vs Actual Product**9%
*“Exactly as advertised”*
**Writing Experience**7%
*“Nice writers”*
**Pen/Pencil Quality**7%
*“Great set of pens”*
**Sharpness**6%
*“Sharpie pens”*
**Ease Of Use**5%
*“Easy to use”*
**Nib/Tip Quality**4%
*“This 0.6 mm fine tip is perfect for my needs”*
**Durability**4%
*“Seems to be durable and works well”*
**Drawing Experience**4%
*“Good for drawing or writing”*
### **What buyers complain about **
**Functionality-Overall**12%
*“Does not work”*
**Moist/Dry**10%
*“they dry up quickly”*
**Quality-Overall**8%
*“Very poor performance”*
**Value For Money**6%
*“Bit more expensive than cheaper brands”*
**Drying Time**6%
*“don't dry out to quickly”*
**Water Resistance**6%
*“out of water all day didnt help”*
**Dry/Empty Ink**6%
*“Ink is dry”*
**Writing Experience**4%
*“Arrived dry and don't write as a result, not the quality I normally expect from the brand”*
**Durability**4%
*“doesn't last long”*
**Ink Leakage**4%
*“don't store them pointing up or down as that causes the ink to pool”*
### **Top return reasons **
**Functionality-Overall**18%
**Thickness**10%
**Size-Overall**9%
**Advertised Vs Actual Product**8%
**Dry/Empty Ink**7%
**Moist/Dry**5%
**Paper Quality**4%
**Color**4%
**Ink Refill**4%
**Drying Time**3%
## **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.
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