Is seadoo profitable to sell on Amazon United States?

The niche generates $113K/yr across 10 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is +145.8%. Flapen's verdict: Worth a look (52/100).

How competitive is the seadoo niche?

5 brands and 44 sellers compete. The top 5 products take 83% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in seadoo?

Top complaints mined from reviews: Rubber Quality, Compatibility-Overall, Quality-Overall. The return rate is 1.5%.

When does demand for seadoo peak?

Demand peaks in Jun–Jul–Aug; the busiest month runs 6.2× the quietest.

What does it cost to enter the seadoo niche?

Listings span $5.99–$60.37; the average listing price is $23.06 (sweet spot $15–$100). The average incumbent carries 599 reviews — the moat a new listing must climb.

seadoo

Worth a look

Shows demand growing +145.8% this quarter, but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.

Growth

Incredible+145.8%

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

Avg price

Incredible$23.06

avg listing price — sweet spot $15–$100

Conversion

Great9.8%

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

Returns

Great1.5%

return rate — above 5% kills the launch gate

Price range

Great$5.99–$60.37

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

Review moat

Good599.2

avg incumbent reviews — the moat a new listing must climb

Market size

Okay$113K

$113K/yr · 50K searches

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Competition

Bad83%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

Signals Trending

According to Flapen's Amazon United States niche tracking, seadoo is a $113K/yr Amazon United States market (50K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jun–Jul–Aug. Verdict: Worth a look — 52/100.

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

seadoo market data

Units sold / yr: 6K–8K; avg 500–750/product
Revenue / yr: $138K–$184K; units × avg price
Conversion rate: 9.8%
Avg BSR: #404
Page quality: 0%
Prime: 100%
Sponsored: 40%
Out of stock: 0.0%
Avg brand age: 48 months
Avg seller age: 163 days

Competition & brand share

The top 5 products capture 83% of clicks — a locked-up shelf that new listings rarely crack.

Brands

5 falling

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

83%

Top 20: 100%

Open market

NGK81%
Hipa11%
Wetenex3%
Push Industries3%
Ciuouient2%
Open — no brand owns it (0%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +145.8% search growth over the last 90 days.

Peak months: Jun, Jul, Aug · busiest ÷ quietest = 6.2×

Open Trend

Top seadoo search terms

seadoo spark accessories18K/yr +211.9%0.1% conv.
ngk dcpr8e10K/yr +134.4%19.9% conv.
seadoo spark trixx accessories6K/yr +165.7%0.2% conv.
dcpr8e spark plug7K/yr +82.8%17.4% conv.
ngk dcpr8e spark plug4K/yr +141.8%23.5% conv.
dcpr8e4K/yr +64.6%19.2% conv.

All search terms

Top seadoo 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 10 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

NGK 4339 DCPR8E Compatible With SeaDoo 4-Tec Spark Plug Set All 130 155 185 215 255 260 RXP RXT X GTI GTX Wake GTS GTI 3 Pack

NGK$16.464.8★1,591 rev

NGK Spark Plug 4339 DCPR8E (2 Pack)

NGK$12.184.7★262 rev

NGK 4339 Standard Spark Plug DCPR8E (4 Pack)

NGK$20.214.8★277 rev

Hipa (Pack of 2) DCPR8E Spark Plugs Compatible with NGK 4339 SeaDoo Marine Boat Jet Skis PWC Stand-up WaveRunner

Hipa$5.995.0★8 rev

(10-Pack) NGK Spark Plugs DCPR8E (Stock # 4339)

NGK$42.034.9★91 rev

Newest

by launch date

DCPR8E Spark Plug Fits NGK DCPR8E 4339 SeaDoo 4-Tec GTI GTX GTS Marine Boat Jet 4 PACK

Wetenex$8.942 rev

4mo ago

Hipa (Pack of 2) DCPR8E Spark Plugs Compatible with NGK 4339 SeaDoo Marine Boat Jet Skis PWC Stand-up WaveRunner

Hipa$5.998 rev

8mo ago

Hipa (Pack of 4) DCPR8E Spark Plugs Bujia Compatible with NGK 4339 SeaDoo Marine Boat Jet Skis PWC Stand-up WaveRunner

Hipa$8.933,486 rev

8mo ago

Ciuouient Storage Cargo Bin Cover Lid/Storage Lid Adapter(1PCS) Compatible with Sea-Doo Spark 3 Up 2014-2023; Sea-Doo Spark 2 Up 2014-2023-BLACK

Ciuouient$34.7810 rev

1y ago

104.132 Push Industries Boarding Fold-Down Step Compatible with Sea-Doo Spark All Models Trixx Reboarding Watercraft Step Accessories 275 LB Capacity (Replace OEM# 295100494 295100642)

Push Industries$60.3770 rev

2y ago

What buyers say about seadoo

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

What buyers love

Size-Overall28%

“Perfect Fit”

Advertised Vs Actual Product24%

“As advertised”

Quality-Overall17%

“Excellent product”

Value For Money10%

“Inexpensive”

Product Condition5%

“Runs like new”

Storage Capacity5%

“allowed for Alot more space inside”

Socket/Port/Plug5%

“Fits both plug socket sizes”

Motor Power5%

“Exactly replacement for cf moto 600 u force sxs”

Assembly/Installation3%

“Easy to install”

What buyers complain about

Rubber Quality33%

“Not the exact same as OEM-No Rubber”

Compatibility-Overall33%

“Not for Polaris Ranger 900 / 1000”

Quality-Overall33%

“this thing is super cheap”

Top return reasons

Size-Overall64%

Compatibility-Overall11%

Socket/Port/Plug5%

Advertised Vs Actual Product5%

Defective Material/Parts4%

Value For Money4%

Product Condition2%

Certifications1%

Thin1%

Durability1%

Common questions

Is seadoo profitable to sell on Amazon United States?: The niche generates $113K/yr across 10 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is +145.8%. Flapen's verdict: Worth a look (52/100).
How competitive is the seadoo niche?: 5 brands and 44 sellers compete. The top 5 products take 83% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in seadoo?: Top complaints mined from reviews: Rubber Quality, Compatibility-Overall, Quality-Overall. The return rate is 1.5%.
When does demand for seadoo peak?: Demand peaks in Jun–Jul–Aug; the busiest month runs 6.2× the quietest.
What does it cost to enter the seadoo niche?: Listings span $5.99–$60.37; the average listing price is $23.06 (sweet spot $15–$100). The average incumbent carries 599 reviews — the moat a new listing must climb.