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18 inch wiper blades

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A deep review moat (25,849 avg reviews) — this niche doesn't clear our bar today.

Market size 25Growth 16Conversion 74Competition 62Returns 65Price range 77Avg price 78Brand share 55Review moat 13Quality gap 52

Avg price

Great$16.14

avg listing price — sweet spot $15–$100

Price range

Great$9.55–$34.21

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

Conversion

Good6.9%

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

Returns

Good2.4%

return rate — above 6% kills the launch gate

Competition

Good48%

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

Brand share

Good72%

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Market size

Okay$103K

$103K/yr · 93K searches

Growth

Bad-17.2%

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

Review moat

Bad25,849.07

avg incumbent reviews — the moat a new listing must climb

Competition

The top 5 products take 48% of clicks — established leaders, but buyers still shop beyond them.

Brands

20 rising

Sellers

75

Top-5 brand share

72%

Open market

23%

  • Rain-X25%
  • JINGOU13%
  • PARRATI13%
  • JustCar11%
  • 5 PLUS9%
  • Bosch5%

Product shelf

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%4%$4K8%$8K12%$12K16%$17K1001K10K100K1.0M Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 29 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 102 weeks — -17.2% search growth over the last 90 days.
3K2KSpike '24Black Friday '24Spike '25Prime Day '25Spike '26DecMarJunAugNovMarMay

Peak months: Nov · busiest ÷ quietest = 1.8×

Reviews

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

What buyers love

Size-Overall25%

“Fit perfect”

Assembly/Installation14%

“Easy To Install”

Value For Money12%

“For the price”

Quality-Overall10%

“Good quality”

Efficiency9%

“Wipers work great”

Advertised Vs Actual Product5%

“work just as advertised”

Ease Of Cleaning5%

“Cleans pretty well”

Noise Level2%

“Quiet, smooth operation”

Ease Of Use2%

“useable”

Durability2%

“Good for about 4 months”

What buyers complain about

Durability19%

“bad durability”

Size-Overall13%

“Definitely does not fit the vehicle”

Windshield Issues10%

“Just like the wheels on the bus go round and round, the wipers on my truck now go swish, swish, swish without scraping my windshield”

Compatibility-Overall10%

“02 Accord, didnt work for me”

Quality-Overall7%

“Poor quality control”

Advertised Vs Actual Product3%

“they donot fit a 2003 Chevy Astro as advertised”

Instructions/User Manual/Troubleshooting3%

“Terrible installation instructions”

Assembly/Installation2%

“Incredibly flawed installation mechanism”

Value For Money2%

“These are just like those expensive one you get at the auto parts store”

Functionality-Overall2%

“Didn't work for me”

Top return reasons

Size-Overall42%
Compatibility-Overall17%
Windshield Issues13%
Defective Material/Parts4%
Add-Ons/Attachments4%
Advertised Vs Actual Product3%
Assembly/Installation3%
Connectivity-Overall2%
Functionality-Overall1%
Value For Money1%