Is db9 connector profitable to sell on Amazon United States?

The niche generates $60K/yr across 26 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -4.5%. Flapen's verdict: Skip it (49/100).

How competitive is the db9 connector niche?

16 brands and 22 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 78% of demand.

What do buyers complain about in db9 connector?

Top complaints mined from reviews: Connectivity-Overall, Quality-Overall, Rope/Wire Tangling. The return rate is 1.6%.

When does demand for db9 connector peak?

Demand is steady year-round — the busiest month runs 1.1× the quietest.

What does it cost to enter the db9 connector niche?

Listings span $5.82–$36.87; the average listing price is $14.96 (sweet spot $15–$100). The average incumbent carries 161 reviews — the moat a new listing must climb.

db9 connector

Skip it

A small market ($60K/yr) — this niche doesn't clear our bar today.

Review moat

Great161.08

avg incumbent reviews — the moat a new listing must climb

Returns

Great1.6%

return rate — above 5% kills the launch gate

Conversion

Great7.8%

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

Avg price

Great$14.96

avg listing price — sweet spot $15–$100

Price range

Good$5.82–$36.87

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

Competition

Good50%

top-5 click share — leaders hold, buyers still browse

Brand share

Okay78%

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

Growth

Bad-4.5%

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

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Market size

Bad$60K

$60K/yr · 51K searches

Signals Low Review Barrier

According to Flapen's Amazon United States niche tracking, db9 connector is a $60K/yr Amazon United States market (51K searches/yr). The top 5 brands hold 78% of demand. Verdict: Skip it — 49/100.

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

db9 connector market data

Units sold / yr: 5K–6K; avg 100–250/product
Revenue / yr: $75K–$90K; units × avg price
Conversion rate: 7.8%
Avg BSR: #1,522
Page quality: 0%
Prime: 100%
Sponsored: 96%
Out of stock: 0.7%
Avg brand age: 77 months
Avg seller age: 224 days

Competition & brand share

The top 5 products take 50% of clicks — established leaders, but buyers still shop beyond them.

Brands

16 flat

Sellers

Top-5 brand share

78%

Top 20: 100%

Top-5 click share

50%

Top 20: 95%

Open market

17%

ANMBEST35%
YIOVVOM17%
DTECH10%
JUXINICE9%
Tnuocke7%
Twinkle Bay5%
Open — no brand owns it (10 brands, 17%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -4.5% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.1×

Open Trend

Top db9 connector search terms

db9 connector25K/yr +2.1%6.2% conv.
db9 breakout9K/yr -14.8%7.9% conv.
db98K/yr -13.2%3.8% conv.
db9 female connector3K/yr +5.9%6.0% conv.
db9 male connector3K/yr +4.5%4.4% conv.
db9 female2K/yr -11.8%9.6% conv.
rs232 connector2K/yr -17.8%3.1% conv.

All search terms

Top db9 connector 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 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

YIOVVOM DB9 Breakout Connector Male 9 pin RS232 connectors Solderless D-SUB RS485 Serial Adapter Module Board with Screw Terminals Case Long Bolts

YIOVVOM$8.434.6★379 rev

ANMBEST 10PCS DB9 Female Breakout Connector DB9 Solderless RS232 D-SUB Serial to 9-pin Port Terminal Adapter Connector Breakout Board with Case Long Bolts Tail Pipe

ANMBEST$35.564.8★30 rev

ANMBEST DB9 Solder Connector 9PIN RS232 Terminal Adapter Breakout Board with Case Assortment Kit(10PCS Male + 10PCS Female)

ANMBEST$16.274.5★80 rev

DTECH DB9 Breakout Connector DB-9 Female RS232 Serial Adapter Solderless Module Board with Screw Terminals Block Case Long Bolts and Tail Pipes

DTECH$7.834.6★73 rev

Tnuocke 18Pack DB9 Connector Adapter Kit 9 Pin D-SUB Male/Female Solder Cup Connectors Tin Plated Housing Lightweight Gray Plastic Hoods Individually Bagged

Tnuocke$10.174.6★94 rev

Newest

by launch date

Aurorapath 3-Pack DB9 Screw Terminal Block Male Plug Adapter D-SUB 9pin Breakout Adapter Plate Connector RS232 Serial to Terminal Board Signal Module

Aurorapath$9.081 rev

8mo ago

YAODHAOD DB9 Breakout Solderless Connector Female 9PIN RS232 Serial Adapter to Terminal Connector Signal Module with Case Screwdriver (DB9 Female Connector (2PCS))

YAODHAOD$10.873 rev

1y ago

ANMBEST 4PCS DB9 Male Female Solderless Connector in One Breakout

ANMBEST$18.283 rev

3y ago

Jienk 2pcs DB9 Male to Female Terminal Breakout Board RS232 D-SUB Serial to 9pin Port Terminal Block Gender Changer Connector

Jienk$14.069 rev

4y ago

DTECH DB9 Breakout Connector DB-9 Female RS232 Serial Adapter Solderless Module Board with Screw Terminals Block Case Long Bolts and Tail Pipes

DTECH$7.8373 rev

4y ago

What buyers say about db9 connector

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

What buyers love

Quality-Overall20%

“no quality control issues”

Connectivity-Overall20%

“it's really nice or quick connects without having to solder or crimp”

Ease Of Use12%

“easy to use”

Socket/Port/Plug9%

“The connector is just fine”

Value For Money8%

“It was cheap”

Advertised Vs Actual Product4%

“As advertised, high quality and worked fine”

Size-Overall3%

“They fit right”

Assembly/Installation2%

“has great ease of installation”

Efficiency2%

“Works fine”

Compatibility-Overall2%

“Worked perfect with my Windows 11 laptop”

What buyers complain about

Connectivity-Overall14%

“so you have to be careful it doesn't disconnect while you're downloading information”

Quality-Overall14%

“Could be better... Poor build quality”

Rope/Wire Tangling14%

“Wire won't stay connected”

Socket/Port/Plug10%

“it will NOT communicate with the serial port”

Flatness7%

“These were more like flat tabs that were pretty difficult to get aligned to solder”

Assembly/Installation5%

“one piece seems thicker than it should making assembly a bit tricky”

Value For Money5%

“can't really afford these kinds of delays over a few bucks”

Thickness5%

“I found the piece that slides into the enclosure to be too thick”

Heating5%

“After that it got uncomfortably hot to the touch”

Top return reasons

Compatibility-Overall45%

Connectivity-Overall14%

Functionality-Overall13%

Size-Overall11%

Socket/Port/Plug4%

Defective Material/Parts3%

Advertised Vs Actual Product2%

Value For Money2%

Quality-Overall1%

Assembly/Installation0%

Common questions

Is db9 connector profitable to sell on Amazon United States?: The niche generates $60K/yr across 26 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -4.5%. Flapen's verdict: Skip it (49/100).
How competitive is the db9 connector niche?: 16 brands and 22 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 78% of demand.
What do buyers complain about in db9 connector?: Top complaints mined from reviews: Connectivity-Overall, Quality-Overall, Rope/Wire Tangling. The return rate is 1.6%.
When does demand for db9 connector peak?: Demand is steady year-round — the busiest month runs 1.1× the quietest.
What does it cost to enter the db9 connector niche?: Listings span $5.82–$36.87; the average listing price is $14.96 (sweet spot $15–$100). The average incumbent carries 161 reviews — the moat a new listing must climb.