Is flux profitable to sell on Amazon United States?

The niche generates $4.0M/yr across 23 tracked products. 8 of 10 products launched in the last 360 days are still selling. 90-day search growth is -10.9%. Flapen's verdict: Worth a look (60/100).

How competitive is the flux niche?

14 brands and 45 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 72% of demand.

What do buyers complain about in flux?

Top complaints mined from reviews: Adhesion/Stickiness, Functionality-Overall, Size-Overall. The return rate is 0.7%.

When does demand for flux peak?

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

What does it cost to enter the flux niche?

Listings span $3.62–$121.68; the average listing price is $32.86 (sweet spot $15–$100). The average incumbent carries 2,570 reviews — the moat a new listing must climb.

flux

Worth a look

Shows a $4.0M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size

Incredible$4.0M

$4.0M/yr · 936K searches

Returns

Incredible0.7%

return rate — above 5% kills the launch gate

Conversion

Incredible13.1%

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

Avg price

Incredible$32.86

avg listing price — sweet spot $15–$100

Price range

Good$3.62–$121.68

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

Brand share

Good72%

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

Review moat

Okay2,569.7

avg incumbent reviews — the moat a new listing must climb

Competition

Okay65%

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

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Growth

Bad-10.9%

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

Signals No Dominant Brand

According to Flapen's Amazon United States niche tracking, flux is a $4.0M/yr Amazon United States market (936K searches/yr). The top 5 brands hold 72% of demand. Verdict: Worth a look — 60/100.

Data updated Jul 30, 2026 · scored weekly · How we score niches

flux market data

Units sold / yr: 100K–125K; avg 6,000–8,000/product
Revenue / yr: $3.3M–$4.1M; units × avg price
Conversion rate: 13.1%
Avg BSR: #3,377
Page quality: 0%
Prime: 100%
Sponsored: 91%
Out of stock: 1.7%
Avg brand age: 60 months
Avg seller age: 170 days

Competition & brand share

The top 5 products take 65% of clicks — established leaders, but buyers still shop beyond them.

Brands

14 rising

Sellers

Top-5 brand share

72%

Top 20: 100%

Top-5 click share

65%

Top 20: 97%

Open market

20%

SRA Soldering Products19%
QUIMTECH17%
Essmetuin14%
BEEYUIHF13%
Romeda9%
Flux Footwear8%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -10.9% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.3×

Open Trend

Top flux search terms

flux293K/yr -6.1%10.3% conv.
solder flux211K/yr -17.4%14.9% conv.
soldering flux172K/yr -13.8%11.5% conv.
flux paste75K/yr -16.6%10.1% conv.
no clean flux20K/yr +2.4%9.9% conv.
rosin flux22K/yr -16.2%12.2% conv.
solder flux paste21K/yr -8.5%11.9% conv.
soldering flux paste19K/yr -6.7%10.8% conv.
flux for soldering electronics6K/yr +171.5%14.8% conv.
flux for soldering16K/yr -23.4%9.0% conv.

All search terms

Top flux 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 23 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

SRA Solder 135 Rosin Paste Soldering Flux For Electronics No Clean Flux Made for Lead and Lead-Free Solder Circuit Boards and Copper Electrical Wire - Safe Clean Residues with No Goopy Mess (2oz Jar)

SRA Soldering Products$8.574.7★18,214 rev

Liquid Solder Flux Dropper (30 ml/1 Oz.) I RMA Liquid Solder Flux I Soldering Flux I Electrical Solder I No Clean Liquid Flux I Rosin Flux I Soldering Flux for Electronics I Lead Free Liquid Solder I

QUIMTECH$7.044.6★3,266 rev

BEEYUIHF Liquid Solder Flux Dropper Liquid Soldering Flux No Clean Liquid Flux Electrical Liquid Rosin Flux Solder Liquid Flux Soldering Squeeze Bottle (30 mL/1.05Oz.)

BEEYUIHF$6.894.6★416 rev

Desoldering Wick and Soldering Flux Paste for Electronics Repair No Clean Flux(10CC) Solder Removal Kit

Essmetuin$9.934.7★1,241 rev

2 Jar Solder Flux Flux for Soldering Rosin Soldering Flux Paste for Lead-Free Electronics Soldering and Soldering DIY (1.2oz/35g in a Jar)

Romeda$6.074.6★5,915 rev

Newest

by launch date

No Clean Solder Flux Paste for Electronics Repair Lead-Free Rosin Soldering Flux 4 Pack 10cc Syringe Flux Paste for PCB SMD SMT Desoldering DIY Soldering Circuit Board Maintenance and Rework

Tozersis$13.4953 rev

4mo ago

Solder Flux Paste & Desoldering Wick: No Clean Rosin Handy Flux Syringe + Solder Wick Braid Circuit Board Electrical Repair Soldering Accessories Kit Electronics Soldering Supplies & Desoldering Tool

Crivon$11.8362 rev

4mo ago

BEEYUIHF 2 Jar Rosin Solder Flux Flux for Soldering for SMD BGA LED PCB IC CPU Electronic Repair & Soldering (1.41oz/40g in a Jar)

BEEYUIHF$5.7724 rev

6mo ago

BEEYUIHF Liquid Solder Flux Dropper 60mL Liquid Soldering Flux No Clean Liquid Flux Electrical Liquid Rosin Flux Solder Liquid Flux Soldering Squeeze Bottle (30 mL x 2)

BEEYUIHF$9.60416 rev

8mo ago

FLUX FOOTWEAR Adapt Knit Trainer Wide Toe Box Shoe with Earth-Link Grounding Zero-Drop Sole Breathable Knit Upper & Machine Washable Perfect for Daily Wear & Light Training

Flux Footwear$114.19136 rev

10mo ago

What buyers say about flux

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

What buyers love

Quality-Overall20%

“Best quality”

Advertised Vs Actual Product19%

“As Advertised”

Value For Money16%

“Excellent value”

Ease Of Use13%

“Works great easy to use”

Ease Of Cleaning7%

“was easy to clean up”

Spray/Flow5%

“It flows smooth”

Size-Overall3%

“Convenient sized jars”

Functionality-Overall2%

“Easy fluxing things like circuit boards”

Portability1%

“Definitely versatile in what it can be used in or on very easy to use and assemble”

Heating1%

“No scorching or cloudy when heated”

What buyers complain about

Adhesion/Stickiness13%

“Sticky”

Functionality-Overall13%

“Just never worked”

Size-Overall9%

“Small container”

Quality-Overall7%

“Bottle needs better quality”

Value For Money6%

“It may seem a little expensive”

Ease Of Use6%

“Not easy to get just a little bit to come out”

Thickness3%

“the wick itself is maybe 1/8 wide aand paper thin”

Spray/Flow3%

“Never could get a good flow using this flux”

Instructions/User Manual/Troubleshooting3%

“No instructions”

Flammable2%

“seems to burn easily making cleanup harder”

Top return reasons

Size-Overall17%

Functionality-Overall15%

Feet Fit13%

Value For Money10%

Advertised Vs Actual Product8%

Quality-Overall5%

Length5%

Defective Material/Parts5%

Width3%

Adhesion/Stickiness3%

Common questions

Is flux profitable to sell on Amazon United States?: The niche generates $4.0M/yr across 23 tracked products. 8 of 10 products launched in the last 360 days are still selling. 90-day search growth is -10.9%. Flapen's verdict: Worth a look (60/100).
How competitive is the flux niche?: 14 brands and 45 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 72% of demand.
What do buyers complain about in flux?: Top complaints mined from reviews: Adhesion/Stickiness, Functionality-Overall, Size-Overall. The return rate is 0.7%.
When does demand for flux peak?: Demand is steady year-round — the busiest month runs 1.3× the quietest.
What does it cost to enter the flux niche?: Listings span $3.62–$121.68; the average listing price is $32.86 (sweet spot $15–$100). The average incumbent carries 2,570 reviews — the moat a new listing must climb.