Is waterproof plug cover profitable to sell on Amazon United States?

The niche generates $48K/yr across 30 tracked products. 5 of 5 products launched in the last 360 days are still selling. 90-day search growth is +34.6%. Flapen's verdict: Skip it (44/100).

How competitive is the waterproof plug cover niche?

20 brands and 53 sellers compete. The top 5 products take 54% of clicks and top 5 brands hold 74% of demand.

What do buyers complain about in waterproof plug cover?

Top complaints mined from reviews: Size-Overall, Water Resistance, Leak-Proof. The return rate is 4.3%.

When does demand for waterproof plug cover peak?

Demand peaks in Nov–Dec; the busiest month runs 4.6× the quietest.

What does it cost to enter the waterproof plug cover niche?

Listings span $4.66–$25.75; the average listing price is $11.32 (sweet spot $15–$100). The average incumbent carries 2,184 reviews — the moat a new listing must climb.

waterproof plug cover

Skip it

A small market ($48K/yr) — this niche doesn't clear our bar today.

Conversion

Great8.0%

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

Growth

Good+34.6%

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

Brand share

Good74%

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

Competition

Good54%

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

Price range

Good$4.66–$25.75

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

Avg price

Okay$11.32

avg listing price — sweet spot $15–$100

Review moat

Okay2,184.47

avg incumbent reviews — the moat a new listing must climb

Returns

Okay4.3%

return rate — above 5% kills the launch gate

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Market size

Bad$48K

$48K/yr · 53K searches

According to Flapen's Amazon United States niche tracking, waterproof plug cover is a $48K/yr Amazon United States market (53K searches/yr). The top 5 brands hold 74% of demand. Demand peaks in Nov–Dec. Verdict: Skip it — 44/100.

Data updated Jul 17, 2026 · scored weekly · How we score niches

waterproof plug cover market data

Units sold / yr: 4K–5K; avg 100–250/product
Revenue / yr: $45K–$57K; units × avg price
Conversion rate: 8.0%
Avg BSR: #60
Page quality: 0%
Prime: 100%
Sponsored: 93%
Out of stock: 0.0%
Avg brand age: 43 months
Avg seller age: 175 days

Competition & brand share

The top 5 products take 54% of clicks — established leaders, but buyers still shop beyond them.

Brands

20 rising

Sellers

Top-5 brand share

74%

Top 20: 100%

Top-5 click share

54%

Top 20: 90%

Open market

21%

cismorvex29%
Flemoon18%
CFMASTER11%
Mellbree9%
Hrensaw6%
PALARINE5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +34.6% search growth over the last 90 days.

Peak months: Nov, Dec · busiest ÷ quietest = 4.6×

Open Trend

Top waterproof plug cover search terms

waterproof plug cover14K/yr +66.1%5.5% conv.
extension cord plug cover9K/yr +9.9%7.7% conv.
outdoor plug protector8K/yr +73.7%6.2% conv.
plug covers for cords7K/yr -14.7%5.1% conv.
waterproof plug protector6K/yr +15.1%5.2% conv.
plug protector outdoor5K/yr +67.8%7.0% conv.
outdoor waterproof plug protector3K/yr +34.2%6.1% conv.

All search terms

Top waterproof plug cover 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 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Cismorvex 2 Pack Outdoor Extension Cord Safety Cover with Waterproof Seal IP54 Water-Resistant Weatherproof Electrical Connection Box with 2 Latches Plug Socket Holiday Decoration Light Black

cismorvex$7.534.6★211 rev

Extension Cord Cover Outdoor Cord Connector Protector IP54 Water-Resistant Indoor Electrical Safety Box for Plug Outlet Tool Holiday Light Black

CFMASTER$6.034.5★2,293 rev

Flemoon [3 Pack] Outdoor Extension Cord Safety Cover with Waterproof Seal Weatherproof Electrical Connection Box to Protect Outdoor Outlet Plug Socket Christmas Holiday Decoration Light Black

Flemoon$16.094.5★10,419 rev

3 Pack Outdoor Extension Cord Safety Cover with Waterproof Seal IP54 Water-Resistant Weatherproof Electrical Connection Box with 2 Latches Plug Socket Holiday Decoration Light Black

cismorvex$9.934.7★706 rev

Outdoor Plug Cover Waterproof Extension Cord Plug Protector for 2 & 3 Prong 120V Outlets - 2 Pack Weather Proof Exterior End Cap for Outside Electrical Plugs Black

Mellbree$14.844.6★103 rev

Newest

by launch date

PALARINE 3 Pack Outdoor Extension Cord Safety Cover with Waterproof Seal - Compact Outdoor Plug Cover IP54 Water-Resistant Protection for Plug Perfect for Holiday Lights Camping and Garden Tools

PALARINE$7.63155 rev

4mo ago

Mellbree Outdoor Plug Cover Waterproof Extension Cord Plug Protector for 2 & 3 Prong 120V Outlets - Weather Proof Exterior End Cap for Outside Electrical Plugs Black

Mellbree$9.40103 rev

7mo ago

Outdoor Plug Cover Waterproof Extension Cord Plug Protector for 2 & 3 Prong 120V Outlets - 2 Pack Weather Proof Exterior End Cap for Outside Electrical Plugs Black

Mellbree$14.84103 rev

8mo ago

FLEMOON IP55 Outdoor Electrical Box Waterproof with Detachable Awning Covers 7.1 * 3.9 * 2.4 inch Weatherproof Extension Cord Cover Easy Installation for Outdoor Plug Outlet String Lights Black

Flemoon$15.36159 rev

9mo ago

Cismorvex 2 Pack Outdoor Extension Cord Safety Cover with Waterproof Seal IP54 Water-Resistant Weatherproof Electrical Connection Box with 2 Latches Plug Socket Holiday Decoration Light Black

cismorvex$7.53211 rev

10mo ago

What buyers say about waterproof plug cover

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

What buyers love

Quality-Overall14%

“Excellent product”

Advertised Vs Actual Product12%

“As described”

Water Resistance8%

“Great waterproofing”

Assembly/Installation7%

“easy to put together”

Size-Overall6%

“Fits as advertised”

Value For Money6%

“Good deal”

Ease Of Use5%

“Easy to use”

Efficiency4%

“Works just as well for holiday lights as it does for something more utilitarian like a power saw in the yard”

Durability4%

“Seems durable”

Security4%

“it feels secure”

What buyers complain about

Size-Overall16%

“Very large”

Water Resistance11%

“No water proofs”

Leak-Proof5%

“IT LEAKS”

Ease Of Use5%

“use a little tricky to open”

Quality-Overall5%

“perhaps some quality control issues at the least”

Durability5%

“Broken”

Thickness3%

“Doesn't fit thick cords”

Strength3%

“not as sturdy as I expected”

Locking Mechanism3%

“Locking mechanism easily breaks off”

Compatibility-Overall2%

“it doesn't fit”

Top return reasons

Size-Overall68%

Compatibility-Overall7%

Advertised Vs Actual Product5%

Functionality-Overall3%

Add-Ons/Attachments2%

Defective Material/Parts2%

Value For Money2%

Assembly/Installation2%

Connectivity-Overall1%

Socket/Port/Plug1%

Common questions

Is waterproof plug cover profitable to sell on Amazon United States?: The niche generates $48K/yr across 30 tracked products. 5 of 5 products launched in the last 360 days are still selling. 90-day search growth is +34.6%. Flapen's verdict: Skip it (44/100).
How competitive is the waterproof plug cover niche?: 20 brands and 53 sellers compete. The top 5 products take 54% of clicks and top 5 brands hold 74% of demand.
What do buyers complain about in waterproof plug cover?: Top complaints mined from reviews: Size-Overall, Water Resistance, Leak-Proof. The return rate is 4.3%.
When does demand for waterproof plug cover peak?: Demand peaks in Nov–Dec; the busiest month runs 4.6× the quietest.
What does it cost to enter the waterproof plug cover niche?: Listings span $4.66–$25.75; the average listing price is $11.32 (sweet spot $15–$100). The average incumbent carries 2,184 reviews — the moat a new listing must climb.