---
title: "Wd-pf-01a Plus — £399K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/diy-tools/wd-pf-01a-plus"
last_updated: "2026-07-31T10:54:36.017Z"
locale: en
meta:
description: "Niche score 53/100 · £399K/yr market. Brand-locked demand (top 5 brands take 99% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 53/100 · £399K/yr market. Brand-locked demand (top 5 brands take 99% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Wd-pf-01a Plus — £399K/yr Amazon UK Niche (2026) - Flapen"
---
# **wd-pf-01a plus**
**Worth a look**
Shows a sweet-spot price point ($28.93 avg), but brand-locked demand (top 5 brands take 99% of clicks) keeps it on the watch list.
Market size 55Growth 40Conversion 64Competition 64Returns 77Price range 92Avg price 95Brand share 3Review moat 23Quality gap 40
**Avg price**
**Incredible****£28.93**
avg listing price — sweet spot $15–$100
**Price range**
**Great****£11.61–£90.48**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Returns**
**Great****1.9%**
return rate — above 5% kills the launch gate
**Conversion**
**Good****5.7%**
search→purchase rate — share of searches ending in a sale
**Competition**
**Good****47%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Good****£399K**
£399K/yr · 242K searches
**Growth**
**Okay****+11.8%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Bad****6,819.81**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Bad****99%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, wd-pf-01a plus is a £399K/yr Amazon United Kingdom market (242K searches/yr). The top 5 brands hold 99% of demand. Verdict: Worth a look — 53/100.
Data updated Jul 22, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **wd-pf-01a plus market data**
- **Units sold / yr**
- **13K–15K**
- avg 500–750/product
- **Revenue / yr**
- **£362K–£434K**
- units × avg price
- **Conversion rate**
- **5.7%**
- **Avg BSR**
- **#16**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **85%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **41 months**
- **Avg seller age**
- **189 days**
## **Competition & brand share**
The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**6 **▲rising
**Sellers**
**12**
**Top-5 brand share**
**99%**
Top 20: 100%
**Top-5 click share**
**47%**
Top 20: 93%
**Open market**
**0%**
- Waterdrop86% - GN3D4% - VILLAPOOL3% - Kigniote3% - GOEDEKE3% - ZaKaBox1% - Open — no brand owns it (0%)
## **Top wd-pf-01a plus search terms**
- **waterdrop filter**125K/yr+15.0%4.3% conv. - **water drop filter**33K/yr+18.7%4.3% conv. - **waterdrop filter cartridge**32K/yr+15.0%7.5% conv. - **waterdrop filter replacement**10K/yr+29.1%4.5% conv. - **waterdrop water filter**10K/yr-5.4%3.0% conv. - **water drop filter cartridges**8K/yr+2.2%5.8% conv. - **waterdrop filters**7K/yr+18.4%4.6% conv. - **wd-pf-01a plus**5K/yr-39.7%9.2% conv. - **waterdrop replacement filters**4K/yr-5.6%3.6% conv. - **water filter waterdrop**3K/yr+3.1%3.6% conv. [**All search terms **](https://flapen.com/research/uk/diy-tools/wd-pf-01a-plus/search-terms)
## **Top wd-pf-01a plus 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%4%£16K8%£32K12%£48K16%£64K1101001K10K100K 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![[Original] Waterdrop WD-PF-01A Plus Replacement Filters for All Waterdrop Jug Filtration System Last Up to 3 Months 757 Liters NSF Certified (Pack of 2)](https://m.media-amazon.com/images/I/41uxBbpG4RL.jpg)**\[Original\] Waterdrop WD-PF-01A Plus Replacement Filters for All Waterdrop Jug Filtration System Last Up to 3 Months 757 Liters NSF Certified (Pack of 2)**Waterdrop**£20.72**4.7★10,777 rev](https://www.amazon.co.uk/dp/B08BYDVCRF) [2**Waterdrop 10UA Under Sink Water Filter 11000 gallons High Capacity Water Filter System NSF/ANSI 42 Certified Reduce PFAS PFOA/PFOS Reduce Lead Chlorine Bad Taste Odor**Waterdrop**£49.13**4.5★12,980 rev](https://www.amazon.co.uk/dp/B083NPW1DN) [3**Waterdrop WD-EDF Replacement Filters for Waterdrop Instant Water Filter Jug WD-ED01 WD-ED02 WD-ED04 Last Up to 3 Months or 757 litres (Pack of 3)**Waterdrop**£30.62**4.7★2,288 rev](https://www.amazon.co.uk/dp/B0C58WMCMJ) [4**Waterdrop Water Filter Tap Stainless-Steel Water Filter for Tap Water Tap Filter Reduces Chlorine Odor and Bad Taste - (1 Filter Included)**Waterdrop**£29.34**4.4★3,301 rev](https://www.amazon.co.uk/dp/B08JPCYHYQ) [5![[Original] Waterdrop WD-PF-01A Plus Replacement Filters for All Waterdrop Tank Filtration System NSF Certified Last Up to 3 Months or 757 L (Pack of 3)](https://m.media-amazon.com/images/I/410HrPMkOzL.jpg)**\[Original\] Waterdrop WD-PF-01A Plus Replacement Filters for All Waterdrop Tank Filtration System NSF Certified Last Up to 3 Months or 757 L (Pack of 3)**Waterdrop**£27.28**4.7★10,777 rev](https://www.amazon.co.uk/dp/B086ZPR3WM)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**2 Pcs Replacement Water Filter for Waterdrop WD-PF-01A Plus NSF Certified Water Filter Cartridges Compatible with All Waterdrop Pitcher Filtration System Reducing Chlorine Impurities and Metals**GOEDEKE**£14.90**15 rev4mo ago](https://www.amazon.co.uk/dp/B0GPX8VTTY) [**VILLAPOOL 4 Replacement Water Filter for Waterdrop WD-PF-01A Plus Water Filter Cartridges Compatible with All Waterdrop Tank Filtration System NSF Certified reducing impurities Chlorine and Metals**VILLAPOOL**£22.80**19 rev6mo ago](https://www.amazon.co.uk/dp/B0GGXYQVCD) [**ZaKaBox 4 Pack Replacement Water Filter Cartridge for Waterdrop WD-PF-01A Plus Compatible with WD-WFD-24/40 WD-PT-04/05/07 5-Stage Pitcher Filter with Coconut Carbon & Carbon Fiber Lasts 3 Months**ZaKaBox**£21.42**9 rev9mo ago](https://www.amazon.co.uk/dp/B0FSWSFJBG) [**2 Pack WD-PF-01A Plus Water Filter for All Water-Drop Pitcher Filtration System Water Filter Cartridges Replacement Compatible with Water-Drop WD-PF-01A Plus Reduces Chlorine Impurities and Metals**Kigniote**£14.20**56 rev10mo ago](https://www.amazon.co.uk/dp/B0FSKVSWBY) [**4 Replacement Water Filter for Waterdrop WD-PF-01A Plus Water Filter Cartridges Compatible with All Waterdrop Tank Filtration System NSF Certified reducing impurities Chlorine and Metals**GN3D**£21.54**159 rev1y ago](https://www.amazon.co.uk/dp/B0F9YQPDLT)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**2 Pcs Replacement Water Filter for Waterdrop WD-PF-01A Plus NSF Certified Water Filter Cartridges Compatible with All Waterdrop Pitcher Filtration System Reducing Chlorine Impurities and Metals**GOEDEKE**£14.90**3.9★**▲ 234%**](https://www.amazon.co.uk/dp/B0GPX8VTTY) [**Waterdrop Instant Electric Water Filter Jug with a 3-Months Filter WD-ED61B 3.5L Countertop Water Filter System Reduce 98% Chlorine and 20+ Contaminants Blue (NOT Reduce TDS)**Waterdrop**£32.88**4.6★**▲ 145%**](https://www.amazon.co.uk/dp/B0DZHNJQBK) [**VILLAPOOL 4 Replacement Water Filter for Waterdrop WD-PF-01A Plus Water Filter Cartridges Compatible with All Waterdrop Tank Filtration System NSF Certified reducing impurities Chlorine and Metals**VILLAPOOL**£22.80**4.6★**▲ 92%**](https://www.amazon.co.uk/dp/B0GGXYQVCD) [**ZaKaBox 4 Pack Replacement Water Filter Cartridge for Waterdrop WD-PF-01A Plus Compatible with WD-WFD-24/40 WD-PT-04/05/07 5-Stage Pitcher Filter with Coconut Carbon & Carbon Fiber Lasts 3 Months**ZaKaBox**£21.42**4.7★**▲ 78%**](https://www.amazon.co.uk/dp/B0FSWSFJBG) [**2 Pack WD-PF-01A Plus Water Filter for All Water-Drop Pitcher Filtration System Water Filter Cartridges Replacement Compatible with Water-Drop WD-PF-01A Plus Reduces Chlorine Impurities and Metals**Kigniote**£14.20**4.4★**▲ 44%**](https://www.amazon.co.uk/dp/B0FSKVSWBY)
**~~View all trending →~~**
## **What buyers say about wd-pf-01a plus**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Filtration**23%
*“Great water filter”*
**Quality-Overall**16%
*“Good product exactly as described”*
**Value For Money**16%
*“much cheaper”*
**Size-Overall**9%
*“Easy fit”*
**Advertised Vs Actual Product**7%
*“Just what I wanted”*
**Ease Of Use**5%
*“Ease of use”*
**Assembly/Installation**4%
*“Easy installation”*
**Efficiency**2%
*“do the job”*
**Water Resistance**2%
*“Yes the waterproof case is absolutely fantastic it works great on my one it fit it good and I will definitely be spreading the word about it no leaks perfect fit and size”*
**Durability**1%
*“Durable”*
### **What buyers complain about **
**Filtration**21%
*“Horrible filter”*
**Size-Overall**10%
*“Too big to fit in properly”*
**Compatibility-Overall**10%
*“Not really compatible- needs blue adapter”*
**Value For Money**9%
*“Dont buy cheap”*
**Functionality-Overall**5%
*“Doesnt activate the blue light”*
**Quality-Overall**5%
*“Very poor quality”*
**Durability**4%
*“not very durable”*
**Instructions/User Manual/Troubleshooting**3%
*“Manual difficult to read”*
**Leak-Proof**3%
*“Product arrived and was slightly leaky”*
**Water Resistance**2%
*“the water does not come through the filter”*
### **Top return reasons **
**Size-Overall**36%
**Compatibility-Overall**25%
**Filtration**16%
**Functionality-Overall**7%
**Leak-Proof**2%
**Advertised Vs Actual Product**2%
**Water Resistance**2%
**Color**1%
**Connectivity-Overall**1%
**Quality-Overall**1%
## **Common questions**
- **Is wd-pf-01a plus profitable to sell on Amazon United Kingdom?**
- The niche generates £399K/yr across 26 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is +11.8%. Flapen's verdict: Worth a look (53/100).
- **How competitive is the wd-pf-01a plus niche?**
- 6 brands and 12 sellers compete. The top 5 products take 47% of clicks and top 5 brands hold 99% of demand.
- **What do buyers complain about in wd-pf-01a plus?**
- Top complaints mined from reviews: Filtration, Size-Overall, Compatibility-Overall. The return rate is 1.9%.
- **What does it cost to enter the wd-pf-01a plus niche?**
- Listings span £11.61–£90.48; the average listing price is £28.93 (sweet spot $15–$100). The average incumbent carries 6,820 reviews — the moat a new listing must climb.
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