Is 3 oz grease cartridge profitable to sell on Amazon United States?

The niche generates $79K/yr across 9 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +53.5%. Flapen's verdict: Skip it (46/100).

How competitive is the 3 oz grease cartridge niche?

7 brands and 93 sellers compete. The top 5 products take 84% of clicks and top 5 brands hold 93% of demand.

What do buyers complain about in 3 oz grease cartridge?

Top complaints mined from reviews: Quality-Overall, Leak-Proof, Functionality-Overall. The return rate is 1.5%.

When does demand for 3 oz grease cartridge peak?

Demand peaks in Apr–May–Jun; the busiest month runs 2.5× the quietest.

What does it cost to enter the 3 oz grease cartridge niche?

Listings span $9.03–$19.79; the average listing price is $13.38 (sweet spot $15–$100). The average incumbent carries 1,701 reviews — the moat a new listing must climb.

3 oz grease cartridge

Skip it

A concentrated shelf (top 5 take 84% of clicks) — this niche doesn't clear our bar today.

Conversion

Great9.7%

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

Returns

Great1.5%

return rate — above 5% kills the launch gate

Growth

Good+53.5%

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

Avg price

Good$13.38

avg listing price — sweet spot $15–$100

Review moat

Okay1,700.67

avg incumbent reviews — the moat a new listing must climb

Price range

Okay$9.03–$19.79

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

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Market size

Bad$79K

$79K/yr · 61K searches

Brand share

Bad93%

top-5 brand share — brand-locked demand

Competition

Bad84%

top-5 click share — a locked-up shelf

According to Flapen's Amazon United States niche tracking, 3 oz grease cartridge is a $79K/yr Amazon United States market (61K searches/yr). The top 5 brands hold 93% of demand. Demand peaks in Apr–May–Jun. Verdict: Skip it — 46/100.

Data updated Jul 8, 2026 · scored weekly · How we score niches

3 oz grease cartridge market data

Units sold / yr: 6K–8K; avg 500–750/product
Revenue / yr: $80K–$107K; units × avg price
Conversion rate: 9.7%
Avg BSR: #101
Page quality: 0%
Prime: 100%
Sponsored: 67%
Out of stock: 0.9%
Avg brand age: 92 months
Avg seller age: 159 days

Competition & brand share

The top 5 products capture 84% of clicks — a locked-up shelf that new listings rarely crack.

Brands

7 rising

Sellers

Top-5 brand share

93%

Top 20: 100%

Top-5 click share

84%

Top 20: 100%

Open market

Lucas Oil68%
Sta-Lube8%
KRETLAW7%
Better Boat5%
Lubrimatic5%
AGS4%
Open — no brand owns it (1 brand, 3%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +53.5% search growth over the last 90 days.

Peak months: Apr, May, Jun · busiest ÷ quietest = 2.5×

Open Trend

Top 3 oz grease cartridge search terms

3 oz grease cartridge20K/yr +30.6%7.8% conv.
3oz grease cartridge12K/yr +46.2%10.9% conv.
mini grease gun cartridge11K/yr +53.6%10.0% conv.
small grease gun 3 oz cartridge5K/yr +231.7%7.2% conv.
mini grease tube5K/yr +68.4%11.9% conv.
grease tube 3 oz4K/yr +56.7%9.0% conv.
small grease tube4K/yr +13.0%8.8% conv.

All search terms

Top 3 oz grease cartridge 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 9 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Lucas Oil 10318 Red N Tacky Grease 3 Ounce Combo Pack

Lucas Oil$10.534.6★4,829 rev

Lucas Oil 10682 Marine Grease 3 Ounce Combo Pack

Lucas Oil$12.134.7★4,744 rev

Sta-Lube Moly-Graph Extreme Pressure Multi-Purpose Grease SL3144 - [Pack of 3] 3 Wt Oz. Extreme Pressure Multi-Purpose Molybdenum and Graphite Grease

Sta-Lube$15.044.6★504 rev

KRETLAW Mini Grease Gun (3000PSI) with Double 3oz Cartridge Grease and 12 Flex Hose Reinforced Coupler for Automotive Marine

KRETLAW$17.884.2★2,490 rev

3PK Mini Marine Grease Tube 3 Oz Cartridge Waterproof High Temp Wheel Bearing Lubricant NLGI 2 for Boat Trailer Bearings and Grease Guns 3-Pack

Better Boat$19.794.6★339 rev

Newest

by launch date

AGS Sticky Red Multipurpose Grease Lithium Complex 3 oz Tubes Water Resistant Extreme Pressure 3 Pack

AGS$9.0313 rev

3mo ago

3PK Mini Marine Grease Tube 3 Oz Cartridge Waterproof High Temp Wheel Bearing Lubricant NLGI 2 for Boat Trailer Bearings and Grease Guns 3-Pack

Better Boat$19.79339 rev

1y ago

KRETLAW Mini Grease Gun (3000PSI) with Double 3oz Cartridge Grease and 12 Flex Hose Reinforced Coupler for Automotive Marine

KRETLAW$17.882,490 rev

2y ago

Lucas Oil 10318 Red N Tacky Grease 3 Ounce Combo Pack

Lucas Oil$10.534,829 rev

5y ago

GREASECO$9.96742 rev

5y ago

What buyers say about 3 oz grease cartridge

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

What buyers love

Quality-Overall14%

“Excellent product”

Advertised Vs Actual Product13%

“Works as advertised”

Ease Of Use12%

“Ease of use”

Value For Money11%

“Good Value as of today”

Lubrication10%

“Good multipurpose grease”

Size-Overall5%

“Convenient size for golf carts etc”

Efficiency5%

“its performing nicely without any complaints”

De-Grease4%

“Not sure what to say about it except it's good grease”

Compactness3%

“compact”

Durability2%

“It feels durable”

What buyers complain about

Quality-Overall23%

“Quality control issue”

Leak-Proof13%

“Leaks like crazy”

Functionality-Overall9%

“Doesnt work properly”

Lubrication8%

“The tube of grease had to be pounded into place because of tight tolerances”

Size-Overall6%

“These didnt fit”

Value For Money5%

“Not a good value”

Ease Of Use3%

“even worse getting it out”

Design-Overall3%

“POOR DESIGN or improper spring”

Durability2%

“Broke on the first use”

Pressure2%

“Hard to load and weak PSI”

Top return reasons

Size-Overall47%

Defective Material/Parts14%

Leak-Proof12%

Advertised Vs Actual Product6%

Functionality-Overall4%

Value For Money3%

Lubrication2%

Compatibility-Overall2%

Quality-Overall1%

Pressure1%

Common questions

Is 3 oz grease cartridge profitable to sell on Amazon United States?: The niche generates $79K/yr across 9 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +53.5%. Flapen's verdict: Skip it (46/100).
How competitive is the 3 oz grease cartridge niche?: 7 brands and 93 sellers compete. The top 5 products take 84% of clicks and top 5 brands hold 93% of demand.
What do buyers complain about in 3 oz grease cartridge?: Top complaints mined from reviews: Quality-Overall, Leak-Proof, Functionality-Overall. The return rate is 1.5%.
When does demand for 3 oz grease cartridge peak?: Demand peaks in Apr–May–Jun; the busiest month runs 2.5× the quietest.
What does it cost to enter the 3 oz grease cartridge niche?: Listings span $9.03–$19.79; the average listing price is $13.38 (sweet spot $15–$100). The average incumbent carries 1,701 reviews — the moat a new listing must climb.