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56

rule 500 gph bilge pump

Worth a look

Shows demand growing +75.0% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 52Growth 81Conversion 62Competition 50Returns 65Price range 33Avg price 80Brand share 16Review moat 78Quality gap 47

Growth

Great+75.0%

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

Avg price

Great$86.04

avg listing price — sweet spot $15–$100

Review moat

Great436.37

avg incumbent reviews — the moat a new listing must climb

Returns

Good2.4%

return rate — above 5% kills the launch gate

Conversion

Good5.5%

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

Market size

Good$320K

$320K/yr · 68K searches

Competition

Okay55%

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

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Price range

Okay$14.64–$270.92

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

Brand share

Bad94%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, rule 500 gph bilge pump is a $320K/yr Amazon United States market (68K searches/yr). The top 5 brands hold 94% of demand. Demand peaks in May–Jun–Jul. Verdict: Worth a look — 56/100.

Data updated Jul 24, 2026 · scored weekly · How we score niches

rule 500 gph bilge pump market data

Units sold / yr
3K–4K
avg 100–250/product
Revenue / yr
$258K–$344K
units × avg price
Conversion rate
5.5%
Avg BSR
#42
Page quality
0%
Prime
100%
Sponsored
52%
Out of stock
1.0%
Avg brand age
84 months
Avg seller age
157 days

Competition & brand share

The top 5 products take 55% of clicks — established leaders, but buyers still shop beyond them.

Brands

10 flat

Sellers

164

Top-5 brand share

94%

Top 20: 100%

Top-5 click share

55%

Top 20: 92%

Open market

5%

  • Rule81%
  • SEAFLO7%
  • Jabsco3%
  • Amarine Made2%
  • Sanuke2%
  • IZTOR2%
  • Open — no brand owns it (4 brands, 5%)

Demand & seasonality

Weekly Amazon search volume, last 103 weeks — +75.0% search growth over the last 90 days.
2K2KSpike '25Prime Day '25Spike '26DecMarJunAugNovMarMay

Peak months: May, Jun, Jul · busiest ÷ quietest = 3.3×

Top rule 500 gph bilge pump search terms

  • rule bilge pump40K/yr
  • rule 500 gph bilge pump6K/yr
  • rule automatic bilge pump7K/yr
  • 500 gph bilge pump4K/yr
  • rule bilge pumps4K/yr
  • rule bilge pumps for boats5K/yr
  • rule pump3K/yr
All search terms

Top rule 500 gph bilge pump 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.

0%4%$13K8%$26K12%$38K16%$51K101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

What buyers say about rule 500 gph bilge pump

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

What buyers love

Quality-Overall26%

“Very well made”

Value For Money11%

“Great price”

Advertised Vs Actual Product10%

“As advertised”

Size-Overall10%

“Perfect fit”

Efficiency10%

“Seaflo bilge pump works good”

Durability8%

“It feels durable”

Noise Level4%

“No noise”

Ease Of Use4%

“It would be much more convenient”

Assembly/Installation3%

“Works well and easy to install”

Mounting2%

“match my current mounting just fine”

What buyers complain about

Durability32%

“Broke immediately”

Functionality-Overall14%

“Auto feature doesnt work”

Buoyancy8%

“Float operation not great”

Quality-Overall6%

“I'll try one more in case mine was poor quality control”

Noise Level5%

“This pump is extremely loud compared to the Rule pumps I have used in the past”

Size-Overall4%

“Hose outlet was to large no 5/8 tube”

Leak-Proof4%

“We have a permanent slow leak in our boat that we keep in a boat slip all summer”

Connectivity-Overall4%

“Gets plugged too easily”

Storage Capacity4%

“Very small for the capacity”

Assembly/Installation4%

“low say to install”

Top return reasons

Size-Overall39%
Functionality-Overall18%
Compatibility-Overall9%
Defective Material/Parts7%
Product Condition5%
Value For Money4%
Advertised Vs Actual Product4%
Assembly/Installation2%
Durability2%
Mounting1%

Common questions

Is rule 500 gph bilge pump profitable to sell on Amazon United States?
The niche generates $320K/yr across 27 tracked products. 90-day search growth is +75.0%. Flapen's verdict: Worth a look (56/100).
How competitive is the rule 500 gph bilge pump niche?
10 brands and 164 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 94% of demand.
What do buyers complain about in rule 500 gph bilge pump?
Top complaints mined from reviews: Durability, Functionality-Overall, Buoyancy. The return rate is 2.4%.
When does demand for rule 500 gph bilge pump peak?
Demand peaks in May–Jun–Jul; the busiest month runs 3.3× the quietest.
What does it cost to enter the rule 500 gph bilge pump niche?
Listings span $14.64–$270.92; the average listing price is $86.04 (sweet spot $15–$100). The average incumbent carries 436 reviews — the moat a new listing must climb.