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sound insulation

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Brand-locked demand (top 5 brands take 96% of clicks) — this niche doesn't clear our bar today.

Market size 12Growth 71Conversion 44Competition 24Returns 77Price range 29Avg price 73Brand share 9Review moat 44Quality gap 28

Returns

Great1.9%

return rate — above 6% kills the launch gate

Avg price

Good$107.36

avg listing price — sweet spot $15–$100

Growth

Good+53.4%

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

Conversion

Okay3.5%

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

Review moat

Okay2,061.35

avg incumbent reviews — the moat a new listing must climb

Price range

Okay$15.11–$303.08

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

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Competition

Bad72%

top-5 click share — a locked-up shelf

Market size

Bad$49K

$49K/yr · 13K searches

Brand share

Bad96%

top-5 brand share — brand-locked demand

Competition

The top 5 products capture 72% of clicks — a locked-up shelf that new listings rarely crack.

Brands

8 rising

Sellers

48

Top-5 brand share

96%

Open market

4%

  • Dynamat70%
  • KILMAT12%
  • MODIGT6%
  • Thermo-Tec3%
  • BuyUneed3%
  • Siless3%
  • Open — no brand owns it (2 brands, 4%)

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%10%$5K20%$10K30%$15K40%$19K1101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 17 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +53.4% search growth over the last 90 days.
6K4KSpike '26SepDecMarJunAugNovMarMay

Peak months: Aug · busiest ÷ quietest = 2.1×

Reviews

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

What buyers love

Quality-Overall22%

“Affordable quality product”

Assembly/Installation10%

“Easy installation”

Ease Of Use9%

“Easy to use”

Adhesion/Stickiness8%

“Very good- excellent adhesive”

Advertised Vs Actual Product8%

“Worked as expected”

Value For Money8%

“Affordable”

Efficiency7%

“A Must Have For Car Restorations”

Audio Quality5%

“Really makes a difference in the sound quality of the vehicle”

Noise Level3%

“it improves the sound drastically”

Material Quality3%

“Good material”

What buyers complain about

Adhesion/Stickiness14%

“Bad adhesive”

Thickness10%

“Slightly thicker than the Gayyang product”

Quality-Overall6%

“it is a little cheap feeling”

Audio Quality6%

“Sound deaf”

Noise Level5%

“Unfortunately, after putting two layers of Kilmat in each wheel well, I did not reduce the noise at all”

Smell5%

“however for some reason it has a very awful smell”

Advertised Vs Actual Product3%

“It didnt jsut meet the description”

Value For Money3%

“A little more expensive”

Assembly/Installation2%

“Its a lot of work to install”

Ease Of Cleaning2%

“its a little messy trying to work with it”

Top return reasons

Material Quality12%
Adhesion/Stickiness11%
Thin11%
Size-Overall8%
Assembly/Installation7%
Value For Money6%
Advertised Vs Actual Product6%
Defective Material/Parts5%
Compatibility-Overall5%
Thickness5%