carly
Skip itA concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Avg price
Incredible$28.67avg listing price — sweet spot $15–$100
Price range
Incredible$19.82–$39.19cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Great$1.4M$1.4M/yr · 1.2M searches
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Conversion
Good4.0%search→purchase rate — share of searches ending in a sale
Returns
Okay4.8%return rate — above 5% kills the launch gate
Growth
Bad-24.9%90-day search growth — must beat 0% to launch
Review moat
Bad34,298.67avg incumbent reviews — the moat a new listing must climb
Competition
Bad100%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, carly is a $1.4M/yr Amazon United States market (1.2M searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Dec. Verdict: Skip it — 39/100.
Data updated Jul 11, 2026 · scored weekly · How we score niches
carly market data
- Units sold / yr
- 40K–50K
- avg 15,000–20,000/product
- Revenue / yr
- $1.1M–$1.4M
- units × avg price
- Conversion rate
- 4.0%
- Avg BSR
- #7
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 0.0%
- Avg brand age
- 45 months
- Avg seller age
- 155 days
Competition & brand share
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.Brands
3 rising
Sellers
11
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
100%
Top 20: 100%
Open market
0%
- FIXD81%
- ANCEL11%
- UMEIJA8%
Demand & seasonality
Weekly Amazon search volume, last 100 weeks — -24.9% search growth over the last 90 days.Peak months: Dec · busiest ÷ quietest = 1.6×
Top carly search terms
- fixd334K/yr
- fixd car diagnostic tool328K/yr
- fix206K/yr
- fixd car scanner32K/yr
- fixe71K/yr
- fixed41K/yr
- fixed car diagnostic scanner44K/yr
- fixd sensor29K/yr
- fixd scanner47K/yr
- fixd obd2 scanner12K/yr
Top carly 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 3 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
FIXD Bluetooth OBD2 Scanner for iPhone & Android - Diagnostic Scan Tool for Repairs and Car Buying - Check Engine Code Reader & Enhanced Codes - (1 Pack w/Free 14-Day FIXD Premium Bundle)
FIXD$39.194.2★35,452 rev
ANCEL AD310 Classic Enhanced Universal OBD II Scanner Car Engine Fault Code Reader CAN Diagnostic Scan Tool Read and Clear Error Codes for 1996 or Newer OBD2 Protocol Vehicle (Black)
ANCEL$27.014.6★65,248 rev
OBD2 Scanner Reader Bluetooth Wireless Auto Diagnostic Scan Tool for iOS & Android for Performance Test Bluetooth 5.4 Car Check Engine Car Code Reader Clear Error Code Live Data Reset Exclusive APP
UMEIJA$19.824.3★2,196 rev
Newest
by launch dateOBD2 Scanner Reader Bluetooth Wireless Auto Diagnostic Scan Tool for iOS & Android for Performance Test Bluetooth 5.4 Car Check Engine Car Code Reader Clear Error Code Live Data Reset Exclusive APP
UMEIJA$19.822,196 rev
ANCEL AD310 Classic Enhanced Universal OBD II Scanner Car Engine Fault Code Reader CAN Diagnostic Scan Tool Read and Clear Error Codes for 1996 or Newer OBD2 Protocol Vehicle (Black)
ANCEL$27.0165,248 rev
FIXD Bluetooth OBD2 Scanner for iPhone & Android - Diagnostic Scan Tool for Repairs and Car Buying - Check Engine Code Reader & Enhanced Codes - (1 Pack w/Free 14-Day FIXD Premium Bundle)
FIXD$39.1935,452 rev
Trending
90-day click momentumOBD2 Scanner Reader Bluetooth Wireless Auto Diagnostic Scan Tool for iOS & Android for Performance Test Bluetooth 5.4 Car Check Engine Car Code Reader Clear Error Code Live Data Reset Exclusive APP
UMEIJA$19.824.3★
ANCEL AD310 Classic Enhanced Universal OBD II Scanner Car Engine Fault Code Reader CAN Diagnostic Scan Tool Read and Clear Error Codes for 1996 or Newer OBD2 Protocol Vehicle (Black)
ANCEL$27.014.6★
FIXD Bluetooth OBD2 Scanner for iPhone & Android - Diagnostic Scan Tool for Repairs and Car Buying - Check Engine Code Reader & Enhanced Codes - (1 Pack w/Free 14-Day FIXD Premium Bundle)
FIXD$39.194.2★
What buyers say about carly
What buyers praise and complain about, mined from review topics.What buyers love
“Easy to operate”
“Great Value”
“As advertised”
“is well made”
“It works great”
“Simple an easy to use most basic features”
“it worked amazingly”
“connectivity is awesome”
“provides accurate readings”
“Has a roll-up of maintenance schedule recommended”
What buyers complain about
“Does not work very well”
“it doesnt have other functionalities of a better quality sensor”
“Cant read the codes”
“Didnt work on my vehicle”
“They are cheaper options that do a lot more”
“No software updates”
“product doesn't work as described”
“would not connect to the app”
“breaks easily”
“Not practical or easy to read”
Top return reasons
Common questions
- Is carly profitable to sell on Amazon United States?
- The niche generates $1.4M/yr across 3 tracked products. 90-day search growth is -24.9%. Flapen's verdict: Skip it (39/100).
- How competitive is the carly niche?
- 3 brands and 11 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in carly?
- Top complaints mined from reviews: Functionality-Overall, Quality-Overall, Instructions/User Manual/Troubleshooting. The return rate is 4.8%.
- When does demand for carly peak?
- Demand peaks in Dec; the busiest month runs 1.6× the quietest.
- What does it cost to enter the carly niche?
- Listings span $19.82–$39.19; the average listing price is $28.67 (sweet spot $15–$100). The average incumbent carries 34,299 reviews — the moat a new listing must climb.