---
title: "10/3 Romex — $1.1M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/10-3-romex"
last_updated: "2026-08-06T20:07:17.159Z"
locale: en
meta:
description: "Niche score 50/100 · $1.1M/yr market · 217K searches/yr · $93.16 avg price. Soft demand (-15.0% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 50/100 · $1.1M/yr market · 217K searches/yr · $93.16 avg price. Soft demand (-15.0% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:title": "10/3 Romex — $1.1M/yr Amazon US Niche (2026) - Flapen"
---
# **10/3 romex**
**Worth a look**
Shows a thin review moat (116 avg reviews), but soft demand (-15.0% this quarter) keeps it on the watch list.
Market size 79Growth 17Conversion 61Competition 63Returns 56Price range 23Avg price 77Brand share 33Review moat 94Quality gap 18
**Review moat**
**Great****116.4**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Great****$1.1M**
$1.1M/yr · 217K searches
**Avg price**
**Great****$93.16**
avg listing price — sweet spot $15–$100
**Competition**
**Good****47%**
top-5 click share — leaders hold, buyers still browse
**Conversion**
**Good****5.3%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Good****2.8%**
return rate — above 5% kills the launch gate
**Brand share**
**Okay****85%**
top-5 brand share — brands hold most of the demand
**Price range**
**Bad****$25.29–$354.11**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-15.0%**
90-day search growth — must beat 0% to launch
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, 10/3 romex is a $1.1M/yr Amazon United States market (217K searches/yr). The top 5 brands hold 85% of demand. Verdict: Worth a look — 50/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **10/3 romex market data**
- **Units sold / yr**
- **8K–10K**
- avg 100–250/product
- **Revenue / yr**
- **$745K–$932K**
- units × avg price
- **Conversion rate**
- **5.3%**
- **Avg BSR**
- **#338**
- **Page quality**
- **0%**
- **Prime**
- **90%**
- **Sponsored**
- **83%**
- **Out of stock**
- **1.0%**
- **Avg brand age**
- **55 months**
- **Avg seller age**
- **147 days**
## **Competition & brand share**
The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**10 **▼falling
**Sellers**
**38**
**Top-5 brand share**
**85%**
Top 20: 100%
**Top-5 click share**
**47%**
Top 20: 88%
**Open market**
**10%**
- energeaster35% - Southwire21% - wirenco11% - XMK11% - VN Infinite quality7% - CLLOMAGY5% - Open — no brand owns it (4 brands, 10%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -15.0% search growth over the last 90 days.
8K6KSpike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.3×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/10-3-romex/trend)
## **Top 10/3 romex search terms**
- **10/3 romex**67K/yr-19.4%5.3% conv. - **10/3 wire**45K/yr-9.9%2.1% conv. - **10-3 romex**16K/yr-11.5%5.5% conv. - **10/3 wire with ground**15K/yr-20.8%2.7% conv. - **10-3 wire**13K/yr+23.9%2.1% conv. - **10/3 romex wire**7K/yr+31.9%1.8% conv. - **10/3 romex 50 ft**10K/yr-43.5%7.3% conv. - **10/3**7K/yr-12.0%2.1% conv. - **10 3 wire**9K/yr-8.5%2.4% conv. - **10/3 romex 100 ft**6K/yr-8.6%5.5% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/10-3-romex/search-terms)
## **Top 10/3 romex 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.
0%5%$54K10%$108K15%$162K20%$215K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
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
[1**Solid Indoor 10/3 Type NM-B Pure Copper Cable 50FT Pink 10 AWG 3 Conductors with Ground Wire**energeaster**$93.82**4.9★75 rev](https://www.amazon.com/dp/B0FR43TZGK) [2**Solid Indoor 10/3 Type NM-B Pure Copper Cable 100FT Pink 10 AWG 3 Conductors with Ground Wire**energeaster**$171.74**4.9★75 rev](https://www.amazon.com/dp/B0FR4PWK3Q) [3**Solid Indoor 10/3 Type NM-B Pure Copper Cable 25FT Pink 10 AWG 3 Conductors with Ground Wire**energeaster**$50.45**4.9★75 rev](https://www.amazon.com/dp/B0FR4G22Q9) [4**Wirenco 10/3 NM-B Non-Mettalic Sheathed Cable Residential Indoor Wire Equivalent to (50Ft Cut)**wirenco**$87.34**4.6★163 rev](https://www.amazon.com/dp/B08T364WSK) [5**Southwire Romex SIMpull Electrical Wire 10 Gauge 3 Conductor 100Ft NMB/G Wire Pink 63948526**Southwire**$172.40**4.7★309 rev](https://www.amazon.com/dp/B0CZY2V7QW)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**CIRENKO 10/3 NM-B Cable 50 FT UL Listed Residential Indoor Electrical Wire 3 Conductors with Ground Solid Bare Copper 600V**CIRENKO**$88.60**1 rev4mo ago](https://www.amazon.com/dp/B0GRBFDZB5) [**10ft NM-B 10/3 Wire with Ground 10/3 Electrical Wire 10 Gauge 3 Conductors with Ground Non-Mettalic Sheathed NM-B Cable Residential Solid Indoor 10 AWG Copper Wiring for Branch Circuit Switch Outlet**XMK**$29.46**43 rev8mo ago](https://www.amazon.com/dp/B0G2WJ7KZR) [**NM-B 10/3 Wire with Ground 50ft 10 AWG Copper Wire 10 Gauge 3 Conductor with Ground Non-Metallic Sheathed NM-B Cable 10/3 Solid Indoor Residential Wiring for Branch Circuit Switches Outlets Other Load**XMK**$97.71**43 rev8mo ago](https://www.amazon.com/dp/B0G2WFVQTV) [**15ft NM-B 10/3 Wire with Ground 10/3 NM-B Copper Electrical Wire 10 Gauge 3 Conductors with Ground Non-Mettalic Sheathed Cable Residential Solid Indoor 10 AWG Copper Wiring for Circuit Switch Outlet**XMK**$39.12**43 rev8mo ago](https://www.amazon.com/dp/B0G2WPX6L6) [**NM-B 10/3 Wire with Ground 25ft 10 Gauge 3 Conductor Electrical Wire 10 AWG Copper Non-Metallic Sheathed NM-B Cable 10/3 Solid Indoor Residential Wiring for Branch Circuit Switches Outlets Other Load**XMK**$53.95**43 rev8mo ago](https://www.amazon.com/dp/B0G2WK1472)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**CIRENKO 10/3 NM-B Cable 50 FT UL Listed Residential Indoor Electrical Wire 3 Conductors with Ground Solid Bare Copper 600V**CIRENKO**$88.60**5.0★**▲ 232%**](https://www.amazon.com/dp/B0GRBFDZB5) [**Solid Indoor 10/3 Type NM-B Pure Copper Cable 50FT Pink 10 AWG 3 Conductors with Ground Wire**energeaster**$93.82**4.9★**▲ 169%**](https://www.amazon.com/dp/B0FR43TZGK) [**10ft NM-B 10/3 Wire with Ground 10/3 Electrical Wire 10 Gauge 3 Conductors with Ground Non-Mettalic Sheathed NM-B Cable Residential Solid Indoor 10 AWG Copper Wiring for Branch Circuit Switch Outlet**XMK**$29.46**4.5★**▲ 165%**](https://www.amazon.com/dp/B0G2WJ7KZR) [**15ft NM-B 10/3 Wire with Ground 10/3 NM-B Copper Electrical Wire 10 Gauge 3 Conductors with Ground Non-Mettalic Sheathed Cable Residential Solid Indoor 10 AWG Copper Wiring for Circuit Switch Outlet**XMK**$39.12**4.5★**▲ 149%**](https://www.amazon.com/dp/B0G2WPX6L6) [**Solid Indoor 10/3 Type NM-B Pure Copper Cable 25FT Pink 10 AWG 3 Conductors with Ground Wire**energeaster**$50.45**4.9★**▲ 139%**](https://www.amazon.com/dp/B0FR4G22Q9)
**~~View all trending →~~**
## **What buyers say about 10/3 romex**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**42%
*“Great value”*
**Quality-Overall**26%
*“Good quality”*
**Advertised Vs Actual Product**13%
*“Works as advertised”*
**Color**3%
*“I really like the pink jacket”*
**Flexibility**2%
*“Good flexibility for routing”*
**Heating**2%
*“Helped us put in a second water heater”*
**Efficiency**2%
*“It works well”*
**Assembly/Installation**2%
*“Worked great for 2nd dryer install”*
**Certifications**2%
*“Excellent quality 10-3 NM-B cable and UL listed”*
**Durability**1%
*“should be durable”*
### **What buyers complain about **
**Advertised Vs Actual Product**29%
*“Info about product incorrect”*
**Value For Money**11%
*“expensive so i decided to get this one this time”*
**Strength**8%
*“It seems much stiffer than normal”*
**Flexibility**4%
*“routing through knockouts definitely took longer due to rigidity”*
**Color**4%
*“LOL Not that color matters at all”*
**Charging**4%
*“Which makes me question the ridiculous mark up they are charging”*
**Ease Of Use**3%
*“Its hard to work with”*
**Durability**3%
*“not as durable as other soow wire Ive had in the past which was a similar outer coating”*
**Thickness**3%
*“thick”*
**Weight Heavy**2%
*“10 three is pretty heavy”*
### **Top return reasons **
**Size-Overall**32%
**Advertised Vs Actual Product**21%
**Value For Money**20%
**Color**5%
**Functionality-Overall**3%
**Certifications**3%
**Compatibility-Overall**3%
**Material Quality**1%
**Quality-Overall**1%
**Defective Material/Parts**1%
## **Common questions**
- **Is 10/3 romex profitable to sell on Amazon United States?**
- The niche generates $1.1M/yr across 30 tracked products. 7 of 12 products launched in the last 360 days are still selling. 90-day search growth is -15.0%. Flapen's verdict: Worth a look (50/100).
- **How competitive is the 10/3 romex niche?**
- 10 brands and 38 sellers compete. The top 5 products take 47% of clicks and top 5 brands hold 85% of demand.
- **What do buyers complain about in 10/3 romex?**
- Top complaints mined from reviews: Advertised Vs Actual Product, Value For Money, Strength. The return rate is 2.8%.
- **When does demand for 10/3 romex peak?**
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- **What does it cost to enter the 10/3 romex niche?**
- Listings span $25.29–$354.11; the average listing price is $93.16 (sweet spot $15–$100). The average incumbent carries 116 reviews — the moat a new listing must climb.
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