dexcom
Skip itA concentrated shelf (top 5 take 88% of clicks) — this niche doesn't clear our bar today.
Quality gap
Incredible3.7★avg incumbent rating — lower means beatable quality
Review moat
Incredible82.11avg incumbent reviews — the moat a new listing must climb
Avg price
Great£51.54avg listing price — sweet spot $15–$100
Price range
Great£13.13–£110.34cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Good2.8%return rate — above 5% kills the launch gate
Conversion
Okay2.6%search→purchase rate — share of searches ending in a sale
Market size
Okay£150K£150K/yr · 111K searches
Growth
Bad-6.5%90-day search growth — must beat 0% to launch
Brand share
Bad93%top-5 brand share — brand-locked demand
Competition
Bad88%top-5 click share — a locked-up shelf
According to Flapen's Amazon United Kingdom niche tracking, dexcom is a £150K/yr Amazon United Kingdom market (111K searches/yr). The top 5 brands hold 93% of demand. Demand peaks in Jan. Verdict: Skip it — 44/100.
Data updated Jul 24, 2026 · scored weekly · How we score niches
dexcom market data
- Units sold / yr
- 3K–3K
- avg 100–250/product
- Revenue / yr
- £129K–£155K
- units × avg price
- Conversion rate
- 2.6%
- Avg BSR
- #113
- Page quality
- 0%
- Prime
- 78%
- Sponsored
- 56%
- Out of stock
- 0.0%
- Avg brand age
- 33 months
- Avg seller age
- 164 days
Competition & brand share
The top 5 products capture 88% of clicks — a locked-up shelf that new listings rarely crack.Brands
8 rising
Sellers
29
Top-5 brand share
93%
Top 20: 100%
Top-5 click share
88%
Top 20: 100%
Open market
4%
- LIMDO39%
- MG Living24%
- Arrowedge12%
- Dexcom One11%
- Lingo7%
- sinocare2%
- Open — no brand owns it (2 brands, 4%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -6.5% search growth over the last 90 days.Peak months: Jan · busiest ÷ quietest = 1.8×
Top dexcom search terms
- dexcom38K/yr
- dexcom g721K/yr
- dexcom oneplus16K/yr
- dexcom g7 continuous glucose monitor14K/yr
- dexcom one11K/yr
- dexcom g7 sensor4K/yr
- dexcom one+3K/yr
- dexcom one plus3K/yr
Top dexcom 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.
All 9 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Dexcom ONE+ Sensor Starter Bundle (1 Sensor + 1 Applicator) CGM Lasts up to 10 days Smaller Faster
LIMDO£49.654.2★58 rev
Dexcom ONE+ Sensor Starter Bundle (1 Sensor + 1 Applicator) | 2024 Updated Blood Glucose CGM | 10 Days Use | Waterproof + No Transmitter Required
MG Living£45.113.4★64 rev
Dexcom Diabetes Monitoring Sensor for upto 10 days CGM Plus Arrowedge Patch and wipe
Arrowedge£45.544.1★12 rev
Lingo Continuous Glucose Monitor (CGM) Biosensor & App. Build Healthier Habits with Real-time Glucose Data & Insights. Made by Abbott. Works with iOS and Android. UK Only.
Lingo£43.103.3★355 rev
Dexcom One sensor pack of 3
Dexcom One£79.314.2★16 rev
Newest
by launch date
SIBIONICS GS3 Continuous Glucose Monitoring (CGM) with Free Overpatch 14-Day Wearable Sensor with Glucose Alarm & AI Meal Analysis Real-Time Spike Insights NFC Connection iOS & Android
SIBIONICS£43.4041 rev
Medic Design Co. 360 Twist Sensor Strap Compatible With Dexcom One Plus G7 Sensor CGM Strap Adjustable Armband Multiple Colours Adhesive Free (Black)
Medic Design Co.£13.136 rev
Dexcom Diabetes Monitoring Sensor for upto 10 days CGM Plus Arrowedge Patch and wipe
Arrowedge£45.5412 rev
sinocare 15-Day Continuous Glucose Monitoring System Less Finger Pricks with iCan CGM APP Output Every 3 Minutes Blood Sugar Monitor 1 Pcs × iCan CGM for UK Diabetes
sinocare£34.29145 rev
Lingo Continuous Glucose Monitor (CGM) Biosensor & App. Build Healthier Habits with Real-time Glucose Data & Insights. Made by Abbott. Works with iOS and Android. UK Only.
Lingo£43.10355 rev
Trending
90-day click momentumSIBIONICS GS3 Continuous Glucose Monitoring (CGM) with Free Overpatch 14-Day Wearable Sensor with Glucose Alarm & AI Meal Analysis Real-Time Spike Insights NFC Connection iOS & Android
SIBIONICS£43.403.4★
Medic Design Co. 360 Twist Sensor Strap Compatible With Dexcom One Plus G7 Sensor CGM Strap Adjustable Armband Multiple Colours Adhesive Free (Black)
Medic Design Co.£13.135.0★
Dexcom Diabetes Monitoring Sensor for upto 10 days CGM Plus Arrowedge Patch and wipe
Arrowedge£45.544.1★
Dexcom One Sensor for Diabetes Monitoring 3 sensors and 1 Transmitter
Dexcom One£110.342.7★
Dexcom ONE+ Sensor Starter Bundle (1 Sensor + 1 Applicator) CGM Lasts up to 10 days Smaller Faster
LIMDO£49.654.2★
What buyers say about dexcom
What buyers praise and complain about, mined from review topics.What buyers love
“Easy to use”
“Very good health tech”
“Good value for money”
“High quality and perfect monitor”
“Ive been really impressed with how well it performs”
“Comfortable”
“Worked well, good connectivity”
“no signs of the adhesive failing”
“it helps me know what I eat will get high glucose to prevent diabetes”
“First step was installing the app, which, for android, I found easily on the app store”
What buyers complain about
“True it is not particularly cheap”
“Easily comes off”
“device not working properly anyway”
“Poor signal connection”
“Android compatibility issues”
“indicating poor quality control”
“spent months pricking fingers to take blood sugar levels”
“the adhesion is absolutely rubbish”
“Inconsistent”
“It doesn't make this very clear before purchase, in fact the advert shown on Amazon”
Top return reasons
Common questions
- Is dexcom profitable to sell on Amazon United Kingdom?
- The niche generates £150K/yr across 9 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -6.5%. Flapen's verdict: Skip it (44/100).
- How competitive is the dexcom niche?
- 8 brands and 29 sellers compete. The top 5 products take 88% of clicks and top 5 brands hold 93% of demand.
- What do buyers complain about in dexcom?
- Top complaints mined from reviews: Value For Money, Durability, Functionality-Overall. The return rate is 2.8%.
- When does demand for dexcom peak?
- Demand peaks in Jan; the busiest month runs 1.8× the quietest.
- What does it cost to enter the dexcom niche?
- Listings span £13.13–£110.34; the average listing price is £51.54 (sweet spot $15–$100). The average incumbent carries 82 reviews — the moat a new listing must climb.