---
title: "Epson 603 Ink Cartridges — £186K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/computers-accessories/epson-603-ink-cartridges"
last_updated: "2026-07-31T14:12:52.633Z"
locale: en
meta:
description: "Niche score 54/100 · £186K/yr market · 57K searches/yr · £17.47 avg price. Soft demand (-15.1% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 54/100 · £186K/yr market · 57K searches/yr · £17.47 avg price. Soft demand (-15.1% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Epson 603 Ink Cartridges — £186K/yr Amazon UK Niche (2026) - Flapen"
---
# **epson 603 ink cartridges**
**Worth a look**
Shows searches that convert (18.7% search→purchase), but soft demand (-15.1% this quarter) keeps it on the watch list.
Market size 37Growth 17Conversion 99Competition 60Returns 97Price range 82Avg price 81Brand share 28Review moat 25Quality gap 52
**Conversion**
**Incredible****18.7%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Incredible****0.6%**
return rate — above 5% kills the launch gate
**Price range**
**Great****£6.79–£58.88**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Avg price**
**Great****£17.47**
avg listing price — sweet spot $15–$100
**Competition**
**Good****49%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Market size**
**Okay****£186K**
£186K/yr · 57K searches
**Brand share**
**Okay****88%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Okay****3,952.32**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-15.1%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, epson 603 ink cartridges is a £186K/yr Amazon United Kingdom market (57K searches/yr). The top 5 brands hold 88% of demand. Demand peaks in Jan–Sep–Oct–Nov. Verdict: Worth a look — 54/100.
Data updated Jul 22, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **epson 603 ink cartridges market data**
- **Units sold / yr**
- **8K–10K**
- avg 250–500/product
- **Revenue / yr**
- **£140K–£175K**
- units × avg price
- **Conversion rate**
- **18.7%**
- **Avg BSR**
- **#741**
- **Page quality**
- **0%**
- **Prime**
- **96%**
- **Sponsored**
- **64%**
- **Out of stock**
- **10.9%**
- **Avg brand age**
- **39 months**
- **Avg seller age**
- **164 days**
## **Competition & brand share**
The top 5 products take 49% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**13 **—flat
**Sellers**
**130**
**Top-5 brand share**
**88%**
Top 20: 100%
**Top-5 click share**
**49%**
Top 20: 91%
**Open market**
**9%**
- Epson55% - Greenjob12% - CATJOY11% - Torvon6% - Cartridgeify4% - Gureef3% - Open — no brand owns it (7 brands, 9%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -15.1% search growth over the last 90 days.
10K6KSpike '24Prime Day '25Spike '26Prime Day '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Sep, Oct, Nov · busiest ÷ quietest = 2.6×
[**Open Trend **](https://flapen.com/research/uk/computers-accessories/epson-603-ink-cartridges/trend)
## **Top epson 603 ink cartridges search terms**
- **epson 603 ink cartridges**12K/yr+6.6%16.1% conv. - **603xl ink cartridges**13K/yr-17.2%10.7% conv. - **epson 603**4K/yr+6.8%19.0% conv. - **epson 603xl ink cartridges multipack**5K/yr-12.4%16.6% conv. - **epson 603xl**5K/yr-0.9%12.3% conv. - **epson starfish ink cartridges**4K/yr+1.1%23.0% conv. - **epson workforce wf-2830 ink cartridges**4K/yr-42.0%3.2% conv. - **603xl**4K/yr-26.9%8.9% conv. - **epson 3100 ink cartridges**3K/yr-42.7%2.8% conv. - **603xl ink cartridges multipack**3K/yr-40.8%10.6% conv. [**All search terms **](https://flapen.com/research/uk/computers-accessories/epson-603-ink-cartridges/search-terms)
## **Top epson 603 ink cartridges 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%£9K10%£19K15%£28K20%£37K1101001K10K100K 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**Epson 603 Starfish Genuine 4-Colours Multipack Ink Cartridges**Epson**£22.26**4.4★19,318 rev](https://www.amazon.co.uk/dp/B07VVSTH27) [2**CATJOY Compatible 603 XL Ink Cartridges Multipack for Epson Expression Home XP-3100 XP-4100 XP-2100 XP-2105 XP-3105 Workforce WF-2810 WF-2830 WF-2835 (Black Cyan Magenta Yellow4-Pack)**CATJOY**£7.98**4.3★1,402 rev](https://www.amazon.co.uk/dp/B0BVTGTMJC) [3**Greenjob Compatible 603XL Ink Cartridges Multipack Replacement for Epson 603 XL Compatible with Expression Home XP-3100 XP-4100 XP-2100 XP-2105 XP-3105 Workforce WF-2810 WF-2830 WF-2835 (12-Pack)**Greenjob**£13.96**4.4★1,773 rev](https://www.amazon.co.uk/dp/B0CWNC1T1Q) [4**Epson 603XL Starfish High Yield Genuine Multipack 4-Colours Ink Cartridges**Epson**£58.88**4.4★19,318 rev](https://www.amazon.co.uk/dp/B07VZ2X3M2) [5**Epson 603 Starfish Genuine Multipack Eco-Friendly Packaging 4-Colours Ink Cartridges**Epson**£23.31**4.4★1,924 rev](https://www.amazon.co.uk/dp/B07XJ4ZQGN)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**SANUNE Compatible 603XL Ink Cartridges Multipack Replacement for Epson 603 603XL Ink Cartridge for Expression Home XP-2100 XP-2105 XP-3100 XP-3105 XP-4100 Workforce WF-2810 WF-2830 WF-2835 (10-Pack)**SANUNE**£11.68**18 rev3mo ago](https://www.amazon.co.uk/dp/B0G2Q5XSJN) [**Torvon Ink Cartridges Multipack Replacement for Epson 603 XL 603XL Ink Cartridges Compatible with Expression Home XP-3100 XP-4100 XP-2100 XP-2105 XP-3105 WF-2810 WF-2830 WF-2835 WF-2850(12-Pack)**Torvon**£11.40**6 rev1y ago](https://www.amazon.co.uk/dp/B0FHKYS86W) [**Torvon Ink Cartridges Multipack Replacement for Epson 603 603XL Ink Cartridges Compatible with Expression Home XP-3100 XP-2100 XP-4100 XP-2105 XP-3105 WF-2810 WF-2830 WF-2835 WF-2850(15-Pack)**Torvon**£12.21**94 rev1y ago](https://www.amazon.co.uk/dp/B0DYHJLBKH) [**Greenjob Compatible 603XL Ink Cartridges Multipack Replacement for Epson 603 XL Compatible with Expression Home XP-3100 XP-4100 XP-2100 XP-2105 XP-3105 Workforce WF-2810 WF-2830 WF-2835 (12-Pack)**Greenjob**£13.96**1,773 rev2y ago](https://www.amazon.co.uk/dp/B0CWNC1T1Q) [**Greenjob Compatible 603XL Ink Cartridges Multipack Replacement for Epson 603 XL Compatible with Expression Home XP-3100 XP-4100 XP-2100 XP-2105 XP-3105 Workforce WF-2810 (2 Cyan 2 Magenta 2 Yellow)**Greenjob**£9.21**1,172 rev2y ago](https://www.amazon.co.uk/dp/B0CG8X4KHJ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**SANUNE Compatible 603XL Ink Cartridges Multipack Replacement for Epson 603 603XL Ink Cartridge for Expression Home XP-2100 XP-2105 XP-3100 XP-3105 XP-4100 Workforce WF-2810 WF-2830 WF-2835 (10-Pack)**SANUNE**£11.68**4.9★**▲ 296%**](https://www.amazon.co.uk/dp/B0G2Q5XSJN) [**Epson 603 Cyan Starfish Genuine Ink Cartridge Standard Capacity Pack of 1**Epson**£6.97**4.5★**▲ 161%**](https://www.amazon.co.uk/dp/B07VWS9QNJ) [**Torvon Ink Cartridges Multipack Replacement for Epson 603 XL 603XL Ink Cartridges Compatible with Expression Home XP-3100 XP-4100 XP-2100 XP-2105 XP-3105 WF-2810 WF-2830 WF-2835 WF-2850(12-Pack)**Torvon**£11.40**5.0★**▲ 139%**](https://www.amazon.co.uk/dp/B0FHKYS86W) [**Epson 603 Starfish Genuine Multipack Eco-Friendly Packaging 4-Colours Ink Cartridges**Epson**£23.31**4.4★**▲ 138%**](https://www.amazon.co.uk/dp/B07XJ4ZQGN) [**Epson 603 Starfish Genuine Multipack Eco-Friendly Packaging 3-Colours Ink Cartridges**Epson**£17.72**4.4★**▲ 107%**](https://www.amazon.co.uk/dp/B07XJ51BFX)
**~~View all trending →~~**
## **What buyers say about epson 603 ink cartridges**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**28%
*“Value for money”*
**Quality-Overall**17%
*“I found this item was consistent in quality”*
**Compatibility-Overall**8%
*“no problem with compatibility”*
**Print Quality**8%
*“Print quality very very good”*
**Advertised Vs Actual Product**7%
*“Does the job”*
**Cartridge/Ink Quality**6%
*“Good ink”*
**Color**6%
*“Colour good too”*
**Assembly/Installation**4%
*“install fine just like all other inks”*
**Ink Refill**4%
*“I am happily using the inks”*
**Cartridge Capacity**3%
*“Amazing product holds much more ink”*
### **What buyers complain about **
**Functionality-Overall**19%
*“First new block not working”*
**Cartridge Capacity**15%
*“They only had the smallest amount of ink in them”*
**Value For Money**14%
*“Avoid at all costs”*
**Print Quality**12%
*“Inked out”*
**Compatibility-Overall**8%
*“Not compatible”*
**Dry/Empty Ink**6%
*“two of the cartridges are almost empty”*
**Durability**4%
*“Don't last 5 min”*
**Color**4%
*“only the Black works”*
**Quality-Overall**3%
*“Low Quality”*
**Advertised Vs Actual Product**3%
*“I believe they company selling them is purposefully misleading customers by doing this so buyers beware”*
### **Top return reasons **
**Compatibility-Overall**26%
**Functionality-Overall**23%
**Size-Overall**10%
**Ink Refill**10%
**Cartridge/Ink Quality**6%
**Dry/Empty Ink**5%
**Print Quality**4%
**Color**3%
**Cartridge Capacity**3%
**Defective Material/Parts**2%
## **Common questions**
- **Is epson 603 ink cartridges profitable to sell on Amazon United Kingdom?**
- The niche generates £186K/yr across 28 tracked products. 1 of 3 products launched in the last 360 days are still selling. 90-day search growth is -15.1%. Flapen's verdict: Worth a look (54/100).
- **How competitive is the epson 603 ink cartridges niche?**
- 13 brands and 130 sellers compete. The top 5 products take 49% of clicks and top 5 brands hold 88% of demand.
- **What do buyers complain about in epson 603 ink cartridges?**
- Top complaints mined from reviews: Functionality-Overall, Cartridge Capacity, Value For Money. The return rate is 0.6%.
- **When does demand for epson 603 ink cartridges peak?**
- Demand peaks in Jan–Sep–Oct–Nov; the busiest month runs 2.6× the quietest.
- **What does it cost to enter the epson 603 ink cartridges niche?**
- Listings span £6.79–£58.88; the average listing price is £17.47 (sweet spot $15–$100). The average incumbent carries 3,952 reviews — the moat a new listing must climb.
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