Is romex connector profitable to sell on Amazon United States?

The niche generates $150K/yr across 25 tracked products. 2 of 6 products launched in the last 360 days are still selling. 90-day search growth is -0.2%. Flapen's verdict: Worth a look (57/100).

How competitive is the romex connector niche?

19 brands and 59 sellers compete. The top 5 products take 51% of clicks and top 5 brands hold 60% of demand.

What do buyers complain about in romex connector?

Top complaints mined from reviews: Size-Overall, Value For Money, Advertised Vs Actual Product. The return rate is 1.4%.

When does demand for romex connector peak?

Demand is steady year-round — the busiest month runs 1.3× the quietest.

What does it cost to enter the romex connector niche?

Listings span $4.85–$45.47; the average listing price is $18.95 (sweet spot $15–$100). The average incumbent carries 200 reviews — the moat a new listing must climb.

romex connector

Worth a look

Shows a thin review moat (200 avg reviews), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Review moat

Great200.32

avg incumbent reviews — the moat a new listing must climb

Returns

Great1.4%

return rate — above 5% kills the launch gate

Conversion

Great9.8%

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

Avg price

Great$18.95

avg listing price — sweet spot $15–$100

Brand share

Good60%

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

Price range

Great$4.85–$45.47

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

Competition

Good51%

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

Market size

Okay$150K

$150K/yr · 81K searches

Growth

Bad-0.2%

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

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

According to Flapen's Amazon United States niche tracking, romex connector is a $150K/yr Amazon United States market (81K searches/yr). The top 5 brands hold 60% of demand. Verdict: Worth a look — 57/100.

Data updated Jul 27, 2026 · scored weekly · How we score niches

romex connector market data

Units sold / yr: 6K–8K; avg 250–500/product
Revenue / yr: $114K–$152K; units × avg price
Conversion rate: 9.8%
Avg BSR: #134
Page quality: 0%
Prime: 96%
Sponsored: 92%
Out of stock: 0.0%
Avg brand age: 43 months
Avg seller age: 172 days

Competition & brand share

The top 5 products take 51% of clicks — established leaders, but buyers still shop beyond them.

Brands

19 rising

Sellers

Top-5 brand share

60%

Top 20: 100%

Top-5 click share

51%

Top 20: 93%

Open market

34%

QWORK24%
Sintuff13%
Dpwrrot10%
Kyuionty6%
MAKERELE6%
WENORA6%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -0.2% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.3×

Open Trend

Top romex connector search terms

romex connector31K/yr -4.7%6.6% conv.
romex connectors6K/yr +25.6%9.1% conv.
junction box connector7K/yr -3.0%1.8% conv.
1/2 romex connector5K/yr -4.1%17.1% conv.
romex connectors 1/25K/yr -15.6%14.6% conv.
1/2 inch romex connector3K/yr +31.5%6.6% conv.
romex clamps5K/yr -8.6%7.3% conv.
electrical box clamps4K/yr +18.4%4.2% conv.
nm cable connector4K/yr -12.0%5.0% conv.
electrical box connectors4K/yr +3.0%5.0% conv.

All search terms

Top romex 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

QWORK Cable Connector 16 Pieces 1/2 Clamp Type Cable Connectors Steel Connector for Metallic Conduit Protect Cables

QWORK$9.014.8★502 rev

Sintuff 50 Pcs 3/8 in. - 1/2 in. Push in Cable Connector Bulk Non Metallic Nm Cable Connector Button Junction Box Gray Electrical Conduit Fittings Fits for 1/2 Inch Knockouts

Sintuff$9.954.6★186 rev

Kyuionty 4 Pcs 1/2 Inch Clamp Type Cable Connectors Zinc Clamp Cable Connector Fittings for Metallic Conduit Protect Cables

Kyuionty$6.334.7★338 rev

Dpwrrot 36 Packs 1/2 Cable Connectors for Romex Zinc Alloy Wire Clamps for Metallic Conduit Protect Cables NM Cables Electrical Box Silver-Zinc

Dpwrrot$19.744.7★33 rev

150 Pcs of 3/8-1/2 Inch Electrical Wire Box Connectors Wire Connectors Push-in for Romex Clamp Cable Connector Non-Metallic Button Push Electrical Box Cable Fits for 1/2 Inch Knockouts

QZQUFJ$18.354.1★28 rev

Newest

by launch date

20 Packs 1/2 3/4 1 Cable Connectors Compatible with Romex Zinc Alloy Wire Clamps for Metallic Conduit Protect Cables NM Cables Electrical Box Silver-Zinc

Dpwrrot$19.797 rev

4mo ago

(4 PACK) Airmont Products 3/8 Inch Clamp Type NM Cable Connector Zinc Die Cast Connector for Electrical Boxes Fits 1/2 Knockout For Non-Metallic NM Cable Secure Strain Relief UL Listed

Airmont Products$4.8537 rev

6mo ago

OHLECTRIC 1/2 Inch Clamp Type Cable Connectors (100-Pack) Heavy-Duty Zinc Alloy Wire Clamps for NM Cables Wires Metal Conduit Electrical Boxes Electrical Connectors for Junction Boxes Panels

OHLECTRIC$37.1414 rev

8mo ago

FEMITU 200 Pack 1/2 Inch Non-Metallic Cable Connectors for Electrical Boxes

Femitu$25.985 rev

9mo ago

Dpwrrot 100 Packs 1/2 Cable Connectors Compatible with Romex Zinc Alloy Wire Clamps for Metallic Conduit Protect Cables NM Cables Electrical Box Silver-Zinc

Dpwrrot$45.4733 rev

10mo ago

What buyers say about romex connector

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

What buyers love

Size-Overall17%

“Fits Electrical Boxes”

Value For Money17%

“well worth the money”

Advertised Vs Actual Product16%

“As advertised”

Quality-Overall15%

“they are exactly like all the quality built ones”

Ease Of Use8%

“Easy to use”

Assembly/Installation4%

“Easy to install”

Efficiency3%

“They function well”

Connectivity-Overall3%

“connectors are fully functional”

Security2%

“Secure Installations”

Functionality-Overall1%

“perfect functionality”

What buyers complain about

Size-Overall28%

“Not true1/2 fit”

Value For Money17%

“which breaks down to just over a dollar each”

Advertised Vs Actual Product13%

“False advertising”

Quality-Overall10%

“Cheap”

Locking Mechanism3%

“They don't securely click in like others do”

Suitable For Indoor2%

“Just know that these are for indoor use only as they do not provide a liquid tight seal”

Assembly/Installation1%

“Compared to the name brand versions from Sigma, Halex, and CE, these are much more difficult to set properly because the locknuts slip rather than snug up to the box”

Grip1%

“slip way too easily when trying to tighten them down”

Socket/Port/Plug1%

“Way too expensive for such a basic connector”

Material Quality1%

“no better material”

Top return reasons

Size-Overall54%

Value For Money9%

Socket/Port/Plug8%

Advertised Vs Actual Product6%

Compatibility-Overall6%

Connectivity-Overall3%

Defective Material/Parts2%

Quality-Overall2%

Functionality-Overall2%

Thin2%

Common questions

Is romex connector profitable to sell on Amazon United States?: The niche generates $150K/yr across 25 tracked products. 2 of 6 products launched in the last 360 days are still selling. 90-day search growth is -0.2%. Flapen's verdict: Worth a look (57/100).
How competitive is the romex connector niche?: 19 brands and 59 sellers compete. The top 5 products take 51% of clicks and top 5 brands hold 60% of demand.
What do buyers complain about in romex connector?: Top complaints mined from reviews: Size-Overall, Value For Money, Advertised Vs Actual Product. The return rate is 1.4%.
When does demand for romex connector peak?: Demand is steady year-round — the busiest month runs 1.3× the quietest.
What does it cost to enter the romex connector niche?: Listings span $4.85–$45.47; the average listing price is $18.95 (sweet spot $15–$100). The average incumbent carries 200 reviews — the moat a new listing must climb.