Is drop n fill profitable to sell on Amazon United States?

The niche generates $6K/yr across 9 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -45.6%. Flapen's verdict: Skip it (33/100).

How competitive is the drop n fill niche?

9 brands and 34 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 78% of demand.

What do buyers complain about in drop n fill?

Top complaints mined from reviews: Leak-Proof, Durability, Quality-Overall. The return rate is 2.1%.

When does demand for drop n fill peak?

Demand peaks in Feb–Jun–Dec; the busiest month runs 31.7× the quietest.

What does it cost to enter the drop n fill niche?

Listings span $9.87–$135.96; the average listing price is $62.67 (sweet spot $15–$100). The average incumbent carries 2,163 reviews — the moat a new listing must climb.

drop n fill

Skip it

A small market ($6K/yr) — this niche doesn't clear our bar today.

Avg price

Great$62.67

avg listing price — sweet spot $15–$100

Returns

Good2.1%

return rate — above 5% kills the launch gate

Quality gap

Good4.3★

avg incumbent rating — lower means beatable quality

Price range

Good$9.87–$135.96

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

Brand share

Okay78%

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

Review moat

Okay2,162.56

avg incumbent reviews — the moat a new listing must climb

Competition

Bad78%

top-5 click share — a locked-up shelf

Conversion

Bad0.5%

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

Growth

Bad-45.6%

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

Market size

Bad$6K

$6K/yr · 17K searches

Signals High Price

According to Flapen's Amazon United States niche tracking, drop n fill is a $6K/yr Amazon United States market (17K searches/yr). The top 5 brands hold 78% of demand. Demand peaks in Feb–Jun–Dec. Verdict: Skip it — 33/100.

Data updated Jul 11, 2026 · scored weekly · How we score niches

drop n fill market data

Units sold / yr: 100–250; avg 0–100/product
Revenue / yr: $6K–$16K; units × avg price
Conversion rate: 0.5%
Avg BSR: #70
Page quality: 0%
Prime: 89%
Sponsored: 100%
Out of stock: 16.4%
Avg brand age: 39 months
Avg seller age: 212 days

Competition & brand share

The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.

Brands

9 rising

Sellers

Top-5 brand share

78%

Top 20: 100%

Top-5 click share

78%

Top 20: 100%

Open market

15%

DEWAY24%
The Little Hero16%
TERA PUMP14%
FEEDRON12%
Scepter12%
DAXIMMC7%
Open — no brand owns it (3 brands, 15%)

Demand & seasonality

Weekly Amazon search volume, last 59 weeks — -45.6% search growth over the last 90 days.

Peak months: Feb, Jun, Dec · busiest ÷ quietest = 31.7×

Open Trend

Top drop n fill search terms

drop n fill9K/yr -35.2%0.2% conv.
drop and fill gas tank for boat6K/yr -52.8%0.5% conv.
dropnfill2K/yr -63.9%0.0% conv.

All search terms

Top drop n fill 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

Deway Automatic Fuel Transfer Pump with Nozzle for Flow Control & Stop Fits Most Gas Cans Extra Long Hose for Gasoline Diesel Fuel & More

DEWAY$70.624.3★1,743 rev

Preemie Clothes Girl Newborn Baby Boy Clothes | Baby Girl Newborn Essentials | Bamboo Pajamas Baby Onesies | Ultra-Soft NICU-Friendly Two-Way Zipper & Fold-Over Mitts (Sky Blue Preemie Bb 3-5 lbs)

The Little Hero$33.544.7★39 rev

TERA PUMP 5th Gen TRFA01 Fuel Transfer Pump with Overfill Protection

TERA PUMP$74.534.3★7,974 rev

FEEDRON Automatic Fuel Transfer Pump with Auto-Stop 3.8 Gallon per Min 51 Extra Long Hose Battery or USB Powered 4 Can Adapters Fast and Safe Portable Gas Can Pump for Oil Diesel Gasoline.

FEEDRON$44.594.5★988 rev

Scepter Duramax Flo N Go 14 Gallon Gas 53 Liter Portable Fuel Tank and Fuel Transfer Pump with 10-Foot Hose for Lawn Mower Farm Marine Commercial and Home Use Gasoline Only Red

Scepter$135.964.1★7,590 rev

Newest

by launch date

Fuel Transfer Pump with Auto Stop-Overfill Protection for Gas Can 4 Gallon per min 51 Overlong Hose Fuel Transfer Pump with 3 Tank Adapter Portable Gas Pump for Gasoline Diesel Oil

DAXIMMC$36.27112 rev

9mo ago

Automatic Electric Fuel Transfer Pump with Auto-Stop 3.8GPM & 51 Hose & 4 Size Adapters Gas Can Pump with Leak Protection for Gasoline Diesel Kerosene Gifts for Men Dad Him - 2nd Gen Red Black

VEECAP$40.85501 rev

11mo ago

Multifunctional Liquid Siphon Pump for Gasoline Motor Oil Fuel Diesel Water Fish Tank - 2024 Upgrade With 3.2/6.5/9.8ft Hose (4.9ft)

OFY ONLY FOR YOU$9.87238 rev

1y ago

FEEDRON Automatic Fuel Transfer Pump with Auto-Stop 3.8 Gallon per Min 51 Extra Long Hose Battery or USB Powered 4 Can Adapters Fast and Safe Portable Gas Can Pump for Oil Diesel Gasoline.

FEEDRON$44.59988 rev

1y ago

Preemie Clothes Girl Newborn Baby Boy Clothes | Baby Girl Newborn Essentials | Bamboo Pajamas Baby Onesies | Ultra-Soft NICU-Friendly Two-Way Zipper & Fold-Over Mitts (Sky Blue Preemie Bb 3-5 lbs)

The Little Hero$33.5439 rev

2y ago

What buyers say about drop n fill

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

What buyers love

Ease Of Use16%

“Ease of use”

Fuel Efficiency15%

“great gas can pump”

Advertised Vs Actual Product10%

“it works as expected”

Quality-Overall9%

“Very good as advertised”

Efficiency8%

“It works great”

Value For Money5%

“Pretty good product for the price”

Leak-Proof5%

“no more spills”

Pressure5%

“Very good pump”

Battery Life3%

“Great battery life and features”

Ease Of Cleaning3%

“Clean”

What buyers complain about

Leak-Proof15%

“Cans/ jugs can leak”

Durability11%

“Broke after a handful of uses”

Quality-Overall11%

“Poor quality”

Size-Overall9%

“No fit”

Functionality-Overall6%

“It does not work hardly at all”

Value For Money5%

“Waste of money”

Advertised Vs Actual Product4%

“Very misleading”

Ease Of Use3%

“Will not fit most car applications -very high-effort to use”

Battery Life2%

“Not battery powered”

Strength2%

“Very basic and flimsy”

Top return reasons

Size-Overall34%

Advertised Vs Actual Product16%

Functionality-Overall12%

Compatibility-Overall10%

Leak-Proof4%

Defective Material/Parts3%

Quality-Overall2%

Value For Money2%

Durability1%

Suction1%

Common questions

Is drop n fill profitable to sell on Amazon United States?: The niche generates $6K/yr across 9 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -45.6%. Flapen's verdict: Skip it (33/100).
How competitive is the drop n fill niche?: 9 brands and 34 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 78% of demand.
What do buyers complain about in drop n fill?: Top complaints mined from reviews: Leak-Proof, Durability, Quality-Overall. The return rate is 2.1%.
When does demand for drop n fill peak?: Demand peaks in Feb–Jun–Dec; the busiest month runs 31.7× the quietest.
What does it cost to enter the drop n fill niche?: Listings span $9.87–$135.96; the average listing price is $62.67 (sweet spot $15–$100). The average incumbent carries 2,163 reviews — the moat a new listing must climb.