---
title: "Philips Sonicare Diamondclean 9000 — £363K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/philips-sonicare-diamondclean-9000"
last_updated: "2026-07-31T18:31:08.941Z"
locale: en
meta:
description: "Niche score 38/100 · £363K/yr market · 57K searches/yr · £138.60 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 38/100 · £363K/yr market · 57K searches/yr · £138.60 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Philips Sonicare Diamondclean 9000 — £363K/yr Amazon UK Niche (2026) - Flapen"
---
# **philips sonicare diamondclean 9000**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 54Growth 15Conversion 55Competition 18Returns 46Price range 24Avg price 62Brand share 0Review moat 45Quality gap 84
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Good****£138.60**
avg listing price — sweet spot $15–$100
**Conversion**
**Good****4.6%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Good****£363K**
£363K/yr · 57K searches
**Returns**
**Okay****3.3%**
return rate — above 5% kills the launch gate
**Review moat**
**Okay****2,020.62**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Bad****£64.62–£212.92**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Bad****78%**
top-5 click share — a locked-up shelf
**Growth**
**Bad****-19.1%**
90-day search growth — must beat 0% to launch
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
**Signals**[** High Price**](https://flapen.com/research/niches?market=uk&signal=high_price "Avg price > $50")
According to Flapen's Amazon United Kingdom niche tracking, philips sonicare diamondclean 9000 is a £363K/yr Amazon United Kingdom market (57K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Nov–Dec. Verdict: Skip it — 38/100.
Data updated Jul 24, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **philips sonicare diamondclean 9000 market data**
- **Units sold / yr**
- **2K–2K**
- avg 100–250/product
- **Revenue / yr**
- **£208K–£277K**
- units × avg price
- **Conversion rate**
- **4.6%**
- **Avg BSR**
- **#33**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **62%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **43 months**
- **Avg seller age**
- **154 days**
## **Competition & brand share**
The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**2 **▲rising
**Sellers**
**89**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**78%**
Top 20: 100%
**Open market**
**0%**
- PHILIPS98% - SURI2% - Open — no brand owns it (0%)
## **Demand & seasonality**
Weekly Amazon search volume, last 77 weeks — -19.1% search growth over the last 90 days.
3K2KPrime Day '25Spike '25Black Friday '25Spike '26 seasonFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Nov, Dec · busiest ÷ quietest = 2.6×
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/philips-sonicare-diamondclean-9000/trend)
## **Top philips sonicare diamondclean 9000 search terms**
- **sonicare 9000**9K/yr-2.2%4.7% conv. - **philips sonicare diamondclean 9000**8K/yr-2.3%5.0% conv. - **philips sonicare 9900 prestige**7K/yr-8.0%1.5% conv. - **philips sonicare 9000**6K/yr-6.0%4.6% conv. - **philips sonicare diamondclean**6K/yr-17.2%3.0% conv. - **sonicare 9900**4K/yr-0.4%4.0% conv. - **philips sonicare toothbrush 9000**4K/yr-21.1%5.2% conv. - **sonicare diamondclean**5K/yr-69.7%2.8% conv. - **philips sonicare 9900**3K/yr-15.3%2.9% conv. - **sonicare diamondclean 9000**2K/yr+35.4%4.0% conv. [**All search terms **](https://flapen.com/research/uk/health-personal-care/philips-sonicare-diamondclean-9000/search-terms)
## **Top philips sonicare diamondclean 9000 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%£36K20%£73K30%£109K40%£145K1001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 13 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Philips Sonicare DiamondClean 9000 Series Power Electric Toothbrush Special Edition - Sonic Brush Dark Blue 1 X C3 Premium Plaque Control Brush Head (Model HX9911/88)**PHILIPS**£101.04**4.1★4,003 rev](https://www.amazon.co.uk/dp/B0B1MKQDPJ) [2**Philips Sonicare DiamondClean Prestige 9900 - Sonic Electric Toothbrush with 1x A3 Premium All-in-One Brush Head and Charging Case in Midnight Blue (Model HX9992/12)**PHILIPS**£181.42**4.0★467 rev](https://www.amazon.co.uk/dp/B08RTD6QCH) [3**Philips Sonicare DiamondClean 9000 Electric Toothbrush Sonic Toothbrush with App Pressure Sensor 4 Brushing Modes 3 Intensity Levels Charging Glass Black & Rosegold Dual Pack Model HX9914/57**PHILIPS**£131.50**4.0★4,083 rev](https://www.amazon.co.uk/dp/B0877B86K9) [4**Philips Hx9911/84 Sonicare Diamond Clean 9000 Series Power Electric Tooth Brush Pink 1 Count Pack of 1**PHILIPS**£100.01**4.1★4,003 rev](https://www.amazon.co.uk/dp/B0B1MGY5LG) [5**Philips Sonicare DiamondClean 9000 Electric Toothbrush Special Edition Sonic Toothbrush with App Pressure Sensor 4 Brushing Modes 3 Intensity Levels Charging Stand Aquamarine Model HX9911/89**PHILIPS**£116.62**4.1★4,003 rev](https://www.amazon.co.uk/dp/B0B15L2DT8)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**SURI 2.0 New Sonic Electric Toothbrush with Pressure Sensor | 1 Month+ Battery| Electric Toothbrush Adults | Sonic Toothbrushes | Green**SURI**£64.62**2,302 rev11mo ago](https://www.amazon.co.uk/dp/B0FLRZ5S7Y) [**Philips Sonicare DiamondClean 9900 Prestige Electric Toothbrush with SenseIQ Technology and App 5 Brushing Modes 3 Intensity Levels Charging Travel Case Black Model HX9992/43**PHILIPS**£212.92**467 rev1y ago](https://www.amazon.co.uk/dp/B0F338G11T) [**Philips Sonicare DiamondClean Smart 9400 Electric Toothbrush Sonic Toothbrush with App Pressure Sensor Brush Head Detection 4 Brushing Modes and 3 Intensity Levels Black Model HX9918/89**PHILIPS**£173.21**359 rev2y ago](https://www.amazon.co.uk/dp/B0D5Y13BCB) [**Philips Sonicare DiamondClean 9000 Electric Toothbrush - Sonic Toothbrush with App Pressure Sensor 4 Brushing Modes 3 Intensity Levels Charging Stand USB Travel Case White Model HX9911/63**PHILIPS**£123.40**2,698 rev4y ago](https://www.amazon.co.uk/dp/B0B3F7PDMB) [**Philips Sonicare DiamondClean 9000 Series Power Electric Toothbrush Special Edition - Sonic Brush Dark Blue 1 X C3 Premium Plaque Control Brush Head (Model HX9911/88)**PHILIPS**£101.04**4,003 rev4y ago](https://www.amazon.co.uk/dp/B0B1MKQDPJ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**SURI 2.0 New Sonic Electric Toothbrush with Pressure Sensor | 1 Month+ Battery| Electric Toothbrush Adults | Sonic Toothbrushes | Green**SURI**£64.62**4.6★**▲ 397%**](https://www.amazon.co.uk/dp/B0FLRZ5S7Y) [**Philips Sonicare DiamondClean 9000 Electric Toothbrush - Sonic Toothbrush with App Pressure Sensor 4 Brushing Modes 3 Intensity Levels Charging Stand USB Travel Case White Model HX9911/63**PHILIPS**£123.40**4.2★**▲ 137%**](https://www.amazon.co.uk/dp/B0B3F7PDMB) [**Philips Sonicare DiamondClean Smart 9400 Electric Toothbrush Sonic Toothbrush with App Pressure Sensor Brush Head Detection 4 Brushing Modes and 3 Intensity Levels White Model HX9917/88**PHILIPS**£147.01**4.3★**▲ 66%**](https://www.amazon.co.uk/dp/B09BW4JLSS) [**Philips Sonicare DiamondClean 9000 Series Power Electric Toothbrush Special Edition - Sonic Brush Dark Blue 1 X C3 Premium Plaque Control Brush Head (Model HX9911/88)**PHILIPS**£101.04**4.1★**▲ 36%**](https://www.amazon.co.uk/dp/B0B1MKQDPJ) [**Philips Sonicare DiamondClean 9000 Electric Toothbrush Sonic Toothbrush with App Pressure Sensor 4 Brushing Modes 3 Intensity Levels Charging Glass Black & Rosegold Dual Pack Model HX9914/57**PHILIPS**£131.50**4.0★**▲ 24%**](https://www.amazon.co.uk/dp/B0877B86K9)
**~~View all trending →~~**
## **What buyers say about philips sonicare diamondclean 9000**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Oral Hygiene**35%
*“it cleans my teeth so much better”*
**Ease Of Cleaning**10%
*“Easy to use thorough clean”*
**Quality-Overall**5%
*“Good quality”*
**Value For Money**5%
*“Great value great product would recommend”*
**Tooth Sensitivity**4%
*“it cleans my teeth so much better”*
**Breathability**2%
*“Leaves fresh breath”*
**Battery Life**2%
*“long battery life”*
**Ease Of Use**2%
*“Easy to use”*
**Vibration/Speed Control**2%
*“you still get the vibration reminder”*
**Charging**2%
*“charges quick when its needed”*
### **What buyers complain about **
**Durability**18%
*“Doesnt last”*
**Charging**15%
*“Doesnt charge”*
**Battery Life**9%
*“Disappointing Battery Life”*
**Oral Hygiene**8%
*“First toothbrush developed a fault inside of a few months”*
**Value For Money**7%
*“way too expensive”*
**Quality-Overall**6%
*“poor quality product”*
**Touch/Button Controls**3%
*“On/off button broke”*
**Functionality-Overall**2%
*“It developed a fault in the middle of the night and wouldn't switch off”*
**Vibration/Speed Control**2%
*“Beware the poor quality where the vibration will change rapidly over time due to the motor/build/ I dont know just not staying how it came”*
**Design-Overall**2%
*“terrible design, broken after 2 years”*
### **Top return reasons **
**Charging**31%
**Functionality-Overall**11%
**Defective Material/Parts**10%
**Vibration/Speed Control**6%
**Oral Hygiene**5%
**Product Condition**5%
**Value For Money**4%
**Battery Life**3%
**Color**2%
**Advertised Vs Actual Product**2%
## **Common questions**
- **Is philips sonicare diamondclean 9000 profitable to sell on Amazon United Kingdom?**
- The niche generates £363K/yr across 13 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -19.1%. Flapen's verdict: Skip it (38/100).
- **How competitive is the philips sonicare diamondclean 9000 niche?**
- 2 brands and 89 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in philips sonicare diamondclean 9000?**
- Top complaints mined from reviews: Durability, Charging, Battery Life. The return rate is 3.3%.
- **When does demand for philips sonicare diamondclean 9000 peak?**
- Demand peaks in Nov–Dec; the busiest month runs 2.6× the quietest.
- **What does it cost to enter the philips sonicare diamondclean 9000 niche?**
- Listings span £64.62–£212.92; the average listing price is £138.60 (sweet spot $15–$100). The average incumbent carries 2,021 reviews — the moat a new listing must climb.
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