12/3 romex
Worth a lookShows a sweet-spot price point ($71.63 avg), but soft demand (-3.0% this quarter) keeps it on the watch list.
Avg price
Great$71.63avg listing price — sweet spot $15–$100
Review moat
Great315.19avg incumbent reviews — the moat a new listing must climb
Competition
Great38%top-5 click share — an open shelf
Market size
Good$457K$457K/yr · 135K searches
Conversion
Good4.7%search→purchase rate — share of searches ending in a sale
Returns
Good2.8%return rate — above 5% kills the launch gate
Brand share
Okay76%top-5 brand share — brands hold most of the demand
Price range
Okay$20.21–$223.01cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Growth
Bad-3.0%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, 12/3 romex is a $457K/yr Amazon United States market (135K searches/yr). The top 5 brands hold 76% of demand. Verdict: Worth a look — 53/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
12/3 romex market data
- Units sold / yr
- 5K–6K
- avg 100–250/product
- Revenue / yr
- $358K–$430K
- units × avg price
- Conversion rate
- 4.7%
- Avg BSR
- #365
- Page quality
- 0%
- Prime
- 95%
- Sponsored
- 74%
- Out of stock
- 0.0%
- Avg brand age
- 56 months
- Avg seller age
- 162 days
Competition & brand share
Clicks spread well past the top 5 (38% combined) — an open shelf where new products get seen.Brands
15 rising
Sellers
53
Top-5 brand share
76%
Top 20: 100%
Top-5 click share
38%
Top 20: 80%
Open market
19%
- Southwire21%
- VN Infinite quality21%
- XMK15%
- YDDECW13%
- ARIZONA ELECTRICAL SOLUTIONS6%
- Cerrowire5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -3.0% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Top 12/3 romex search terms
- 12/3 romex56K/yr
- 12/3 wire26K/yr
- 12-3 romex12K/yr
- 12/36K/yr
- 12-3 wire7K/yr
- romex 12/37K/yr
- 12 3 romex5K/yr
- 12 3 wire4K/yr
- 12/3 romex 50 ft4K/yr
- 12/3 romex 100 ft3K/yr
Top 12/3 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Southwire Romex SIMpull Residential Wire 12 Gauge 3 Conductor 25 Ft W/G NM-B Cable Purple 63947821
Southwire$42.384.8★162 rev
VN Infinite quality Solid Indoor Wire 12/3 W/G NMB Cable 50ft Coil - Residential Indoor Electrical Wire Type NM-B; Yellow SW# 63947622
VN Infinite quality$66.674.8★11 rev
NM-B 12/3 Wire with Ground 25ft 12 Gauge 3 Conductor Electrical Wire 12 AWG Solid Copper Indoor W/G NMB Cable 12/3 Non-Metallic Sheathed Cable Residential Wiring for Outlets Switches Lighting
XMK$39.634.8★23 rev
VN Infinite quality Solid Indoor Wire 12/3 W/G NMB Cable 25ft Coil - Residential Indoor Electrical Wire Type NM-B; Yellow SW# 63947621
VN Infinite quality$39.965.0★17 rev
VN Infinite quality Solid Indoor Wire 12/3 W/G NMB Cable 100 FT - Residential Indoor Electrical Wire Type NM-B; Yellow SW# 63947620 (100 Ft)
VN Infinite quality$128.594.6★8 rev
Newest
by launch dateNM-B 12/3 Wire with Ground 25ft 12 Gauge 3 Conductor Electrical Wire 12 AWG Solid Copper Indoor W/G NMB Cable 12/3 Non-Metallic Sheathed Cable Residential Wiring for Outlets Switches Lighting
XMK$39.6323 rev
10FT 12/3 NM-B Wire with Ground 12-3 12AWG Copper Wire 12 Gauge 3 Conductor Residential Electrical Wiring 12/3 W/G NMB Cable Solid Indoor Nonmettalic Sheathed Cable with Ground for Switch Outlet Light
XMK$21.7623 rev
NM-B 12/3 Wire with Ground 50FT 12 Gauge 3 Conductor Electrical Wire 12/3 NM-B 12AWG Solid Copper Indoor Wiring Nonmetallic Sheathed Residential Cable for Branch Circuit Switches Outlets Lighting
XMK$70.3923 rev
100FT NM-B 12/3 Wire with Ground 12 Gauge 3 Conductor Wire 12-3 Copper 12 AWG Non-Metallic Sheathed 12/3 NM-B W/G Cable Stranded Indoor Residential Electrical Wiring for Branch Circuit Switches&Outlet
XMK$129.2223 rev
YDDECW 12/3 NM-B Wire with Ground - 50FT Non-Metallic Sheathed Cable Pure Copper 12 AWG 3 Conductor Residential Indoor Wire for Outlets Switches and Other Loads etc. (Yellow)
YDDECW$82.8340 rev
Trending
90-day click momentum100FT NM-B 12/3 Wire with Ground 12 Gauge 3 Conductor Wire 12-3 Copper 12 AWG Non-Metallic Sheathed 12/3 NM-B W/G Cable Stranded Indoor Residential Electrical Wiring for Branch Circuit Switches&Outlet
XMK$129.224.8★
NM-B 12/3 Wire with Ground 25ft 12 Gauge 3 Conductor Electrical Wire 12 AWG Solid Copper Indoor W/G NMB Cable 12/3 Non-Metallic Sheathed Cable Residential Wiring for Outlets Switches Lighting
XMK$39.634.8★
VN Infinite quality Solid Indoor Wire 12/3 W/G NMB Cable 100 FT - Residential Indoor Electrical Wire Type NM-B; Yellow SW# 63947620 (100 Ft)
VN Infinite quality$128.594.6★
VN Infinite quality Solid Indoor Wire 12/3 W/G NMB Cable 50ft Coil - Residential Indoor Electrical Wire Type NM-B; Yellow SW# 63947622
VN Infinite quality$66.674.8★
10FT 12/3 NM-B Wire with Ground 12-3 12AWG Copper Wire 12 Gauge 3 Conductor Residential Electrical Wiring 12/3 W/G NMB Cable Solid Indoor Nonmettalic Sheathed Cable with Ground for Switch Outlet Light
XMK$21.764.8★
What buyers say about 12/3 romex
What buyers praise and complain about, mined from review topics.What buyers love
“Great value”
“Good quality delivered on time”
“as advertised”
“It is fairly rigid and can form and lays flat which is beneficial in certain situations”
“Easy return”
“It works”
“I especially like the color so it's easy to identify from all the other yellow/white cables in my wall”
“this fits the bill”
“Love the quality of materials”
“Great for my wiring project”
What buyers complain about
“Item was to short. 30 ft.”
“its ok a little hard to manage”
“Not worth the lower price”
“STRAIGHT GARBAGE”
“This is a bit of listing trickery”
“A pain to install”
“Even the 14awg is pretty bulky for what it is”
“nothing about having the standard”
“it is dangerously misleading regarding standard industry practices for marine safety”
“Buy-beware- on the used product”
Top return reasons
Common questions
- Is 12/3 romex profitable to sell on Amazon United States?
- The niche generates $457K/yr across 43 tracked products. 2 of 13 products launched in the last 360 days are still selling. 90-day search growth is -3.0%. Flapen's verdict: Worth a look (53/100).
- How competitive is the 12/3 romex niche?
- 15 brands and 53 sellers compete. The top 5 products take 38% of clicks and top 5 brands hold 76% of demand.
- What do buyers complain about in 12/3 romex?
- Top complaints mined from reviews: Size-Overall, Ease Of Use, Value For Money. The return rate is 2.8%.
- When does demand for 12/3 romex peak?
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- What does it cost to enter the 12/3 romex niche?
- Listings span $20.21–$223.01; the average listing price is $71.63 (sweet spot $15–$100). The average incumbent carries 315 reviews — the moat a new listing must climb.