Is cgm profitable to sell on Amazon United States?

The niche generates $8.8M/yr across 4 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is +0.4%. Flapen's verdict: Worth a look (54/100).

How competitive is the cgm niche?

2 brands and 7 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in cgm?

Top complaints mined from reviews: Durability, Connectivity-Overall, Measurement/Reading Accuracy. The return rate is 1.3%.

What does it cost to enter the cgm niche?

Listings span $45.17–$111.77; the average listing price is $84.71 (sweet spot $15–$100). The average incumbent carries 3,446 reviews — the moat a new listing must climb.

cgm

Worth a look

Shows a $8.8M/yr market, but a concentrated shelf (top 5 take 100% of clicks) keeps it on the watch list.

Market size

Incredible$8.8M

$8.8M/yr · 1.6M searches

Quality gap

Incredible3.2★

avg incumbent rating — lower means beatable quality

Returns

Great1.3%

return rate — above 5% kills the launch gate

Avg price

Great$84.71

avg listing price — sweet spot $15–$100

Price range

Great$45.17–$111.77

cheapest to priciest tracked listing — scored on the share inside $15–$100

Conversion

Good6.6%

search→purchase rate — share of searches ending in a sale

Review moat

Okay3,445.5

avg incumbent reviews — the moat a new listing must climb

Growth

Okay+0.4%

90-day search growth — must beat 0% to launch

Competition

Bad100%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

Signals Quality Gap High Price

According to Flapen's Amazon United States niche tracking, cgm is a $8.8M/yr Amazon United States market (1.6M searches/yr). The top 5 brands hold 100% of demand. Verdict: Worth a look — 54/100.

Data updated Jul 10, 2026 · scored weekly · How we score niches

cgm market data

Units sold / yr: 80K–100K; avg 40,000–50,000/product
Revenue / yr: $6.8M–$8.5M; units × avg price
Conversion rate: 6.6%
Avg BSR: #1
Page quality: 0%
Prime: 75%
Sponsored: 75%
Out of stock: 0.0%
Avg brand age: 42 months
Avg seller age: 151 days

Competition & brand share

The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.

Brands

2 flat

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

100%

Top 20: 100%

Open market

Stelo83%
Lingo17%
Open — no brand owns it (0%)

Demand

Weekly Amazon search volume, last 42 weeks — +0.4% search growth over the last 90 days.

Open Trend

Top cgm search terms

stelo glucose biosensor system343K/yr +5.8%11.0% conv.
dexcom227K/yr +25.4%0.5% conv.
stelo208K/yr +22.7%10.7% conv.
dexcom g7 sensor162K/yr -20.9%0.2% conv.
dexcom stelo glucose monitor84K/yr +28.9%4.5% conv.
dexcom stelo93K/yr +10.7%5.6% conv.
stelo glucose monitor93K/yr -23.9%7.6% conv.
dexcom g7 receiver46K/yr +5.7%0.0% conv.
stello glucose monitor40K/yr +15.0%10.4% conv.
stelo glucose biosensor80K/yr -54.7%6.4% conv.

All search terms

Top cgm 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 4 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Stelo Glucose Biosensor & App by Dexcom - A Leader in Continuous Glucose Monitoring (CGM). 24/7 Tracking & Personalized Insights to Reveal Patterns. 2-Pack (Up to 15 Days Each). iOS & Android.

Stelo$94.722.9★4,165 rev

Lingo Continuous Glucose Monitor (CGM). Made by Abbott. Optimize Your Nutrition with Real-time Glucose Data & Insights. 1 Lingo biosensor lasts up to 14 Days*. Works with iOS and Android. US Only.

Lingo$45.173.0★4,783 rev

Stelo 2 pack

Stelo$111.773.9★51 rev

Lingo Continuous Glucose Monitor (CGM) & App (Pack of 2). Made by Abbott. Optimize Your Nutrition with Real-time Glucose Data & Insights. 1 Lingo biosensor lasts up to 14 Days*. Works with iOS and Android. US Only.

Lingo$87.173.0★4,783 rev

Newest

by launch date

Stelo 2 pack

Stelo$111.7751 rev

7mo ago

Lingo$87.174,783 rev

9mo ago

Stelo Glucose Biosensor & App by Dexcom - A Leader in Continuous Glucose Monitoring (CGM). 24/7 Tracking & Personalized Insights to Reveal Patterns. 2-Pack (Up to 15 Days Each). iOS & Android.

Stelo$94.724,165 rev

1y ago

Lingo Continuous Glucose Monitor (CGM). Made by Abbott. Optimize Your Nutrition with Real-time Glucose Data & Insights. 1 Lingo biosensor lasts up to 14 Days*. Works with iOS and Android. US Only.

Lingo$45.174,783 rev

1y ago

What buyers say about cgm

What buyers praise and complain about, mined from review topics.

What buyers love

Health Monitoring12%

“Great tool for your health”

Ease Of Use10%

“Easy to put on”

Blood Sugar Level8%

“improve my sugar levels”

Quality-Overall4%

“Other than that the device itself has been good”

Sensor4%

“Seems that some sensors are accurate”

Accuracy-Overall4%

“Accurate and affordable”

Value For Money4%

“Saves lots of money”

Instructions/User Manual/Troubleshooting3%

“The instructions are clear”

Efficiency3%

“Works on occasion”

Ease Of Application3%

“Easy to apply”

What buyers complain about

Durability15%

“Broken after 2 days”

Connectivity-Overall14%

“Constantly disconnects”

Measurement/Reading Accuracy10%

“Absolutely inaccurate”

Functionality-Overall8%

“Did not work”

Value For Money6%

“They are expensive”

Blood Sugar Level6%

“it raises blood sugar”

Accuracy-Overall6%

“Not even close to accurate”

Quality-Overall5%

“Bad quality”

Compatibility-Overall4%

“1 said 'incompatible'”

Software/Application3%

“App was not good”

Top return reasons

Connectivity-Overall20%

Functionality-Overall19%

Compatibility-Overall13%

Durability8%

Measurement/Reading Accuracy8%

Adhesion/Stickiness6%

Software/Application4%