negative bus bar
Skip itA small market ($56K/yr) — this niche doesn't clear our bar today.
Avg price
Incredible$23.78avg listing price — sweet spot $15–$100
Price range
Great$9.28–$88.46cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Good2.2%return rate — above 5% kills the launch gate
Review moat
Good783.44avg incumbent reviews — the moat a new listing must climb
Conversion
Good6.1%search→purchase rate — share of searches ending in a sale
Competition
Good53%top-5 click share — leaders hold, buyers still browse
Growth
Good+22.7%90-day search growth — must beat 0% to launch
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Brand share
Bad93%top-5 brand share — brand-locked demand
Market size
Bad$56K$56K/yr · 39K searches
According to Flapen's Amazon United States niche tracking, negative bus bar is a $56K/yr Amazon United States market (39K searches/yr). The top 5 brands hold 93% of demand. Demand peaks in Oct. Verdict: Skip it — 48/100.
Data updated Jul 21, 2026 · scored weekly · How we score niches
negative bus bar market data
- Units sold / yr
- 3K–3K
- avg 0–100/product
- Revenue / yr
- $59K–$71K
- units × avg price
- Conversion rate
- 6.1%
- Avg BSR
- #46
- Page quality
- 0%
- Prime
- 96%
- Sponsored
- 68%
- Out of stock
- 0.0%
- Avg brand age
- 49 months
- Avg seller age
- 168 days
Competition & brand share
The top 5 products take 53% of clicks — established leaders, but buyers still shop beyond them.Brands
9 falling
Sellers
99
Top-5 brand share
93%
Top 20: 100%
Top-5 click share
53%
Top 20: 94%
Open market
4%
- Blue Sea Systems57%
- DAIERTEK13%
- RVBOATPAT10%
- Aienxn7%
- RVMARINEPAT6%
- Joinfworld3%
- Open — no brand owns it (3 brands, 4%)
Demand & seasonality
Weekly Amazon search volume, last 57 weeks — +22.7% search growth over the last 90 days.Peak months: Oct · busiest ÷ quietest = 1.7×
Top negative bus bar search terms
- blue sea bus bar14K/yr
- negative bus bar8K/yr
- ground bus bar 12v5K/yr
- marine ground bus bar4K/yr
- negative bus bar 12v marine4K/yr
- blue sea systems bus bar4K/yr
Top negative bus bar 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
Blue Sea Systems 2300 150 Amp Common BusBar with 10 screws and a cover
Blue Sea Systems$21.624.8★1,368 rev
Blue Sea Systems 2127 250 Amp MaxiBus BusBar with 4 studs
Blue Sea Systems$44.494.7★267 rev
DAIERTEK Negative Bus Bar 12V Marine 4 x 5/16 (M8) Terminal Studs 6 x M4 (#8) Terminal Screws Gound Bus Bar Black Negative Power Distribution Block for Automotive Boat Solar System
DAIERTEK$13.454.8★637 rev
RVBOATPAT Power Distribution Block 12V 150A 1/4 Stud Marine Bus Bar 12 Volt DC Battery Busbar for Boat Automotive Solar Wiring
RVBOATPAT$17.214.7★680 rev
RVMARINEPAT 12V Bus Bar 250A Power Distribution Block 12 Volt Busbars 6 x 5/16 (M8) Terminal Studs Positive & Negative for Car Marine Solar Systems
RVMARINEPAT$26.544.8★202 rev
Newest
by launch dateRVMARINEPAT 12V Bus Bar 250A Power Distribution Block 12 Volt Busbars 6 x 5/16 (M8) Terminal Studs Positive & Negative for Car Marine Solar Systems
RVMARINEPAT$26.54202 rev
Aienxn Marine Bus Bar 12V 150A 1/4 Stud Power Distribution Block 12 Volt DC Battery Busbar Automotive Buss Bar 12v for Car Boat and Solar Wiring (Black)
Aienxn$10.00587 rev
DAIERTEK Bus Bar 12V 150A Mini Power Distribution Block Max 48V DC/300V AC with Cover 4 x 5/16 Posts for Marine Automotive Solar Systems -Negative+Positive
DAIERTEK$19.49637 rev
Aienxn Marine Bus Bar 12V 150A 1/4 Stud Power Distribution Block 12 Volt DC Battery Busbar Automotive Buss Bar 12v for Car Boat and Solar Wiring (Black+Red)
Aienxn$15.47587 rev
Linkstyle Negative Bus Bar 12V Marine Gound Battery BusBar Power Distribution Block with 2X M6 Studs 6X M4 Screws Terminals for Automotive Car Boat Caravan RV
Linkstyle$12.01148 rev
Trending
90-day click momentum
Blue Sea Systems 2307 150 Amp Common BusBar with 4 studs and a cover With Cover 150A
Blue Sea Systems$22.074.4★
RVBOATPAT 275A Marine Bus Bar 12V Power Distribution Block 2 x 5/16 Terminal Studs and 14 x #8 Screws Positive and Ground Battery BusBar for Automotive Car Boat
RVBOATPAT$24.064.6★
Joinfworld Bus Bar 12V 250A Power Distribution Block 4 x 3/8 Studs Marine Bus Bar 12 Volt Battery Busbar Terminal Block for Automotive Car Boat Solar Wiring - Negative&Positive
Joinfworld$21.004.7★
Blue Sea Systems 2127 250 Amp MaxiBus BusBar with 4 studs
Blue Sea Systems$44.494.7★
Blue Sea Systems 2314 100 Amp Mini BusBar with 5 screws and a cover
Blue Sea Systems$16.154.8★
What buyers say about negative bus bar
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent product”
“Works as advertised”
“worth the price”
“Nice size”
“Nice tidy look”
“Well built”
“Easy to install”
“Heavy duty product”
“Seems durable”
“Seems to work well”
What buyers complain about
“Wrong size”
“Poor description”
“It's just a weak design”
“Inconvenient”
“hard to hook up”
“Also, the lugs are not the best quality,”
“Starting to corrode”
“Receiving returned items advertised and new”
“Terminal bus is made of inferior bronze material”
“it is barely held together with the thinnest cheapest plastic possible”
Top return reasons
Common questions
- Is negative bus bar profitable to sell on Amazon United States?
- The niche generates $56K/yr across 25 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +22.7%. Flapen's verdict: Skip it (48/100).
- How competitive is the negative bus bar niche?
- 9 brands and 99 sellers compete. The top 5 products take 53% of clicks and top 5 brands hold 93% of demand.
- What do buyers complain about in negative bus bar?
- Top complaints mined from reviews: Size-Overall, Advertised Vs Actual Product, Design-Overall. The return rate is 2.2%.
- When does demand for negative bus bar peak?
- Demand peaks in Oct; the busiest month runs 1.7× the quietest.
- What does it cost to enter the negative bus bar niche?
- Listings span $9.28–$88.46; the average listing price is $23.78 (sweet spot $15–$100). The average incumbent carries 783 reviews — the moat a new listing must climb.