---
title: "Ink Cartridges Fountain Pen — £49K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/stationery-office-supplies/ink-cartridges-fountain-pen"
last_updated: "2026-07-31T12:32:08.200Z"
locale: en
meta:
description: "Niche score 41/100 · £49K/yr market · 109K searches/yr · £4.63 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 41/100 · £49K/yr market · 109K searches/yr · £4.63 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Ink Cartridges Fountain Pen — £49K/yr Amazon UK Niche (2026) - Flapen"
---
# **ink cartridges fountain pen**
**Skip it**
Prices mostly outside the sweet spot ($0.86–$11.73) — this niche doesn't clear our bar today.
Market size 12Growth 11Conversion 86Competition 54Returns 98Price range 0Avg price 13Brand share 36Review moat 24Quality gap 52
**Returns**
**Incredible****0.4%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****9.8%**
search→purchase rate — share of searches ending in a sale
**Competition**
**Good****53%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****83%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Bad****6,156.36**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Bad****£4.63**
avg listing price — sweet spot $15–$100
**Market size**
**Bad****£49K**
£49K/yr · 109K searches
**Growth**
**Bad****-28.3%**
90-day search growth — must beat 0% to launch
**Price range**
**Bad****£0.86–£11.73**
cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, ink cartridges fountain pen is a £49K/yr Amazon United Kingdom market (109K searches/yr). The top 5 brands hold 83% of demand. Demand peaks in Dec. Verdict: Skip it — 41/100.
Data updated Jul 29, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **ink cartridges fountain pen market data**
- **Units sold / yr**
- **10K–13K**
- avg 250–500/product
- **Revenue / yr**
- **£46K–£58K**
- units × avg price
- **Conversion rate**
- **9.8%**
- **Avg BSR**
- **#117**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **50%**
- **Out of stock**
- **3.7%**
- **Avg brand age**
- **60 months**
- **Avg seller age**
- **179 days**
## **Competition & brand share**
The top 5 products take 53% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**12 **▼falling
**Sellers**
**61**
**Top-5 brand share**
**83%**
Top 20: 100%
**Top-5 click share**
**53%**
Top 20: 90%
**Open market**
**13%**
- PARKER46% - Anker International13% - Helix13% - Online7% - BOCIYER5% - Scriveiner4% - Open — no brand owns it (6 brands, 13%)
## **Demand & seasonality**
Weekly Amazon search volume, last 90 weeks — -28.3% search growth over the last 90 days.
3K2KHoliday '24Spike '25Black Friday '25 seasonDecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Dec · busiest ÷ quietest = 1.8×
[**Open Trend **](https://flapen.com/research/uk/stationery-office-supplies/ink-cartridges-fountain-pen/trend)
## **Top ink cartridges fountain pen search terms**
- **fountain pen ink cartridges**27K/yr-26.6%7.1% conv. - **ink cartridges fountain pen**24K/yr-27.9%6.4% conv. - **parker ink cartridges**13K/yr-23.7%11.5% conv. - **parker fountain pen refills**13K/yr-46.5%11.2% conv. - **parker fountain pen ink cartridges**7K/yr-25.6%10.9% conv. - **fountain pen cartridges**4K/yr+10.2%5.3% conv. - **ink cartridges for fountain pens**4K/yr-13.5%5.4% conv. - **black ink cartridges fountain pen**6K/yr-42.2%12.5% conv. - **parker pen ink cartridges**4K/yr-19.1%14.7% conv. - **pen ink cartridges**3K/yr-22.2%5.9% conv. [**All search terms **](https://flapen.com/research/uk/stationery-office-supplies/ink-cartridges-fountain-pen/search-terms)
## **Top ink cartridges fountain pen 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%5%£2K10%£5K15%£7K20%£10K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
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
[1**Parker Fountain Pen Ink Refill Cartridges | Long | Black QUINK Ink | 10 Count (Blister)**PARKER**£3.92**4.7★19,829 rev](https://www.amazon.co.uk/dp/B01GPM42DM) [2**Oxford 219821 Helix Ink Cartridges - Black (Pack of 20)**Helix**£3.17**4.5★816 rev](https://www.amazon.co.uk/dp/B07KCY6TQH) [3**25 x Standard Sized Universal Black Fountain Pen Ink Cartridge Refills**Anker International**£2.64**4.0★2,073 rev](https://www.amazon.co.uk/dp/B073S86CW6) [4**Parker Fountain Pen Ink Refill Cartridges | Long | Washable Blue QUINK Ink | 10 Count (Blister)**PARKER**£4.78**4.8★2,657 rev](https://www.amazon.co.uk/dp/B01GPM42F0) [5**Parker Fountain Pen Ink Refill Cartridges | Long | Washable Blue QUINK Ink | 5 Count**PARKER**£2.88**4.7★19,829 rev](https://www.amazon.co.uk/dp/B01GPM3Z1C)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**60 Count Bociyer Fountain Pen Ink Refill Cartridges | Standard International Ink Cartridge | 2.6mm bore Diameter | Black Ink**BOCIYER**£8.41**17 rev1y ago](https://www.amazon.co.uk/dp/B0F8QJ1FCP) [**60 Count Bociyer Fountain Pen Ink Refill Cartridges |Ink Cartridge | 3.4mm bore Diameter | Black Ink**BOCIYER**£8.39**14 rev1y ago](https://www.amazon.co.uk/dp/B0F8QLGN6F) [**AIBelire Fountain Pen Ink Cartridges- 2.6mm Bore Diameter- Black- 20pcs**AIBelire**£4.15**23 rev1y ago](https://www.amazon.co.uk/dp/B0DQPHGSD1) [**30 pcs Pen Ink Cartridges Pen Ink Refills 3.4 mm Bore Diameter Refill Size Fits A Wide Range of Fountain Pens**KkvoGmle**£3.58**28 rev2y ago](https://www.amazon.co.uk/dp/B0D47BSZRH) [**Scriveiner Fountain Pen Ink Cartridges - Black - 20 Standard International Ink Cartridges Made in UK The Best Cartridge for Your Scriveiner Pen Refill Size Fits A Wide Range of Fountain Pens**Scriveiner**£8.44**2,078 rev4y ago](https://www.amazon.co.uk/dp/B09WDMBJ3C)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Parker Fountain Pen Ink Refill Cartridges | Long | Black QUINK Ink | 5 Count (Blister)**PARKER**£2.62**4.7★**▲ 309%**](https://www.amazon.co.uk/dp/B01GPM42I2) [**Parker Fountain Pen Ink Refill Cartridges | Long | Blue-Black QUINK Ink | 5 Count (Blister)**PARKER**£3.23**4.7★**▲ 142%**](https://www.amazon.co.uk/dp/B01GPM42M8) [**Parker Fountain Pen Ink Refill Cartridges | Long | Washable Blue QUINK Ink | 5 Count**PARKER**£2.88**4.7★**▲ 138%**](https://www.amazon.co.uk/dp/B01GPM3Z1C) [**60 Count Bociyer Fountain Pen Ink Refill Cartridges |Ink Cartridge | 3.4mm bore Diameter | Black Ink**BOCIYER**£8.39**4.4★**▲ 122%**](https://www.amazon.co.uk/dp/B0F8QLGN6F) [**ONLINE Standard Ink cartridges Universal Fountain Pen Ink Compatible with All Common Standard Fountain pens Replacement cartridges for Fountain pens and rollerballs 6 Pieces Colour Purple**Online**£0.87**4.0★**▲ 98%**](https://www.amazon.co.uk/dp/B0067EJMW0)
**~~View all trending →~~**
## **What buyers say about ink cartridges fountain pen**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**18%
*“Great quality and value arrived quickly”*
**Ink Refill**13%
*“Excellent refills”*
**Advertised Vs Actual Product**10%
*“Does as advertised”*
**Color**10%
*“Lovely color”*
**Size-Overall**9%
*“Perfect fit”*
**Cartridge/Ink Quality**8%
*“Good quality ink”*
**Value For Money**5%
*“Value for money”*
**Paper Quality**3%
*“consistent on paper”*
**Writing Experience**3%
*“Excellent scrivener ink and pens”*
**Compatibility-Overall**2%
*“Compatible with most fountain pens”*
### **What buyers complain about **
**Size-Overall**45%
*“A tight fit”*
**Compatibility-Overall**12%
*“it is difficult to see if they are compatible”*
**Cartridge/Ink Quality**6%
*“Can't comment on the quality of the ink as I have no use for them”*
**Dry/Empty Ink**5%
*“ink does take a lot longer to dry than another brand”*
**Ink Leakage**3%
*“be aware the cartridge necks on these are too long, dont get pierced or fit properly and will not remain attached to the pen, so they fall off in the pen barrel and leak everywhere”*
**Color**2%
*“Black not blue”*
**Spray/Flow**2%
*“So doesnt flow”*
**Thickness**1%
*“fatter than previous versions”*
**Advertised Vs Actual Product**1%
*“Incorrect description and image - avoid”*
**Natural Resource Wastage**1%
*“Waste of money”*
### **Top return reasons **
**Size-Overall**52%
**Ink Refill**19%
**Compatibility-Overall**8%
**Color**4%
**Cartridge Capacity**3%
**Advertised Vs Actual Product**2%
**Quality-Overall**2%
**Leak-Proof**1%
**Ink Leakage**1%
**Defective Material/Parts**1%
## **Common questions**
- **Is ink cartridges fountain pen profitable to sell on Amazon United Kingdom?**
- The niche generates £49K/yr across 28 tracked products. 90-day search growth is -28.3%. Flapen's verdict: Skip it (41/100).
- **How competitive is the ink cartridges fountain pen niche?**
- 12 brands and 61 sellers compete. The top 5 products take 53% of clicks and top 5 brands hold 83% of demand.
- **What do buyers complain about in ink cartridges fountain pen?**
- Top complaints mined from reviews: Size-Overall, Compatibility-Overall, Cartridge/Ink Quality. The return rate is 0.4%.
- **When does demand for ink cartridges fountain pen peak?**
- Demand peaks in Dec; the busiest month runs 1.8× the quietest.
- **What does it cost to enter the ink cartridges fountain pen niche?**
- Listings span £0.86–£11.73; the average listing price is £4.63 (sweet spot $15–$100). The average incumbent carries 6,156 reviews — the moat a new listing must climb.
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