Is st-link v2 profitable to sell on Amazon United States?

The niche generates $83K/yr across 11 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -2.3%. Flapen's verdict: Skip it (48/100).

How competitive is the st-link v2 niche?

9 brands and 21 sellers compete. The top 5 products take 84% of clicks and top 5 brands hold 85% of demand.

What do buyers complain about in st-link v2?

Top complaints mined from reviews: Compatibility-Overall, Functionality-Overall, Durability. The return rate is 1.9%.

What does it cost to enter the st-link v2 niche?

Listings span $6.03–$73.59; the average listing price is $21.46 (sweet spot $15–$100). The average incumbent carries 110 reviews — the moat a new listing must climb.

st-link v2

Skip it

A concentrated shelf (top 5 take 84% of clicks) — this niche doesn't clear our bar today.

Conversion

Great11.8%

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

Review moat

Great110.36

avg incumbent reviews — the moat a new listing must climb

Avg price

Great$21.46

avg listing price — sweet spot $15–$100

Price range

Great$6.03–$73.59

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

Returns

Great1.9%

return rate — above 5% kills the launch gate

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Brand share

Okay85%

top-5 brand share — brands hold most of the demand

Growth

Bad-2.3%

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

Market size

Bad$83K

$83K/yr · 33K searches

Competition

Bad84%

top-5 click share — a locked-up shelf

Signals Low Review Barrier

According to Flapen's Amazon United States niche tracking, st-link v2 is a $83K/yr Amazon United States market (33K searches/yr). The top 5 brands hold 85% of demand. Verdict: Skip it — 48/100.

Data updated Jul 21, 2026 · scored weekly · How we score niches

Competition & brand share

The top 5 products capture 84% of clicks — a locked-up shelf that new listings rarely crack.

Brands

9 falling

Sellers

Top-5 brand share

85%

Top 20: 100%

Top-5 click share

84%

Top 20: 100%

Open market

10%

AITRIP35%
HiLetgo25%
STMicroelectronics13%
Aideepen7%
DEVMO5%
XFCZMG4%
Open — no brand owns it (3 brands, 10%)

Demand

Weekly Amazon search volume, last 15 weeks — -2.3% search growth over the last 90 days.

Open Trend

Top st-link v2 search terms

st-link v211K/yr +1.2%7.9% conv.
st link6K/yr -1.7%10.7% conv.
st link v24K/yr +26.8%11.3% conv.
stlink5K/yr -20.4%8.0% conv.
stlink v24K/yr -10.9%11.2% conv.
st-link4K/yr -6.5%11.2% conv.

All search terms

Top st-link v2 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 11 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

AITRIP 1PCS ST-Link V2 Emulator Downloader Programmer STM32F103C8T6 STM8 STM32 with Cable (Random Color)

AITRIP$6.044.3★87 rev

HiLetgo ST-Link V2 Emulator Downloader Programmer STM32F103C8T6 STM8 STM32 with Cable (Random Color)

HiLetgo$9.664.5★444 rev

ST-Link/V2 in-Circuit debugger/Programmer for STM8 and STM32

STMicroelectronics$40.764.1★72 rev

ST-Link V2 STM32 Emulator Aideepen ST Link V2 Stm32 Programmer Unit mini STM8 STM32 Emulator Downloader M89 New (Random Color)

Aideepen$9.384.4★347 rev

DEVMO ST-Link V2 Mini Metal Shell STM8 STM32 Emulator Downloader Programming Unit M267

DEVMO$16.424.3★39 rev

Newest

by launch date

ALMOCN 2PCS ST-Link V2 Emulator Downloader Programmer Mini STM8 STM32 Emulator Downloader with Cable Random Color

ALMOCN$7.331 rev

8mo ago

1PC of ST-Link/V2 in-Circuit debugger/Programmer for STM8 and STM32

XFCZMG$44.811 rev

1y ago

ST-Link V2 Emulator Downloader Programmer STM32F103C8T6 STM8 STM32 with Cable (Random Color)

ACEIRMC$6.0314 rev

1y ago

AITRIP 1PCS ST-Link V2 Emulator Downloader Programmer STM32F103C8T6 STM8 STM32 with Cable (Random Color)

AITRIP$6.0487 rev

2y ago

DAOKAI ST-Link V2 Emulator Downloader Programmer STM8STM32 Programming Unit 3.3V 5V Two-Color Indicator with Dupont Cable

DAOKAI$6.10114 rev

3y ago

What buyers say about st-link v2

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

What buyers love

Compatibility-Overall17%

“Work Perfect to upgrade the firmware of an Airsense 10 CPAP machine”

Advertised Vs Actual Product16%

“Does the job”

Value For Money14%

“Well, its absolutely affordable so you get what you paid for, it works perfectly, no issues there”

Material Quality13%

“The thing's solid and cheap”

Software/Application10%

“Worked with official programmer”

Connectivity-Overall7%

“connected without any issues”

Design-Overall3%

“Very flexible design”

Strength3%

“Sturdy pins”

Flexibility3%

“Very flexible design”

Socket/Port/Plug2%

“that is done easily enough with a USB-A to USB-C adapter”

What buyers complain about

Compatibility-Overall25%

“NEEDS TO WORK WITH STM CUBE PROGRAMER”

Functionality-Overall19%

“Do NOT buy if you're flashing a new STM32 Chip”

Durability16%

“didnt last long”

Defective Material/Parts13%

“had to discard the unit”

Software/Application6%

“This did not work for programming Blue Pill boards”

Instructions/User Manual/Troubleshooting3%

“No manual”

Connectivity-Overall2%

“The unit wont connect to any device”

Quality-Overall2%

“Cheap isnt always good”

Value For Money2%

“not worth the hassle”

Length2%

“The cables a bit too short”

Top return reasons

Connectivity-Overall30%

Functionality-Overall25%

Compatibility-Overall18%

Defective Material/Parts8%

Advertised Vs Actual Product4%

Socket/Port/Plug3%

Software/Application3%

Color1%

Value For Money1%

Product Condition1%

Common questions

Is st-link v2 profitable to sell on Amazon United States?: The niche generates $83K/yr across 11 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -2.3%. Flapen's verdict: Skip it (48/100).
How competitive is the st-link v2 niche?: 9 brands and 21 sellers compete. The top 5 products take 84% of clicks and top 5 brands hold 85% of demand.
What do buyers complain about in st-link v2?: Top complaints mined from reviews: Compatibility-Overall, Functionality-Overall, Durability. The return rate is 1.9%.
What does it cost to enter the st-link v2 niche?: Listings span $6.03–$73.59; the average listing price is $21.46 (sweet spot $15–$100). The average incumbent carries 110 reviews — the moat a new listing must climb.

st-link v2

st-link v2 market data

Competition & brand share

Demand

Top st-link v2 search terms