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51

diamond polishing pads

Worth a look

Shows a sweet-spot price point ($22.90 avg), but a concentrated shelf (top 5 take 75% of clicks) keeps it on the watch list.

Market size 47Growth 23Conversion 66Competition 21Returns 86Price range 78Avg price 95Brand share 40Review moat 69Quality gap 57

Avg price

Incredible$22.90

avg listing price — sweet spot $15–$100

Returns

Great1.5%

return rate — above 6% kills the launch gate

Price range

Great$9.37–$36.25

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

Review moat

Good720.15

avg incumbent reviews — the moat a new listing must climb

Conversion

Good5.9%

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Market size

Okay$254K

$254K/yr · 187K searches

Brand share

Okay81%

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

Growth

Bad-4.6%

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

Competition

Bad75%

top-5 click share — a locked-up shelf

Competition

The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.

Brands

10 falling

Sellers

14

Top-5 brand share

81%

Open market

14%

  • WORKEASE39%
  • EGOFIX16%
  • POLISHSURF9%
  • Ceeintee9%
  • VISCOO8%
  • SHDIATOOL5%
  • Open — no brand owns it (4 brands, 14%)

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%$25K20%$51K30%$76K40%$102K101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 13 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -4.6% search growth over the last 90 days.
5K4KPrime Day '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.3×

Reviews

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

What buyers love

Quality-Overall24%

“Excellent quality”

Value For Money20%

“Great value”

Ease Of Use10%

“Easy to Use”

Advertised Vs Actual Product6%

“Works as advertised”

Durability6%

“Durable”

Efficiency4%

“These worked great on my last tile job”

Ease Of Cleaning3%

“These pads worked well”

Brightness/Shine/Glow3%

“The granite is super shiny and looks professional”

Size-Overall3%

“it matches the rest amazingly”

Stitch/Finish/Polish2%

“get a nice smooth finish”

What buyers complain about

Quality-Overall26%

“Quality control issues”

Durability13%

“Some of the pads started to fall apart”

Instructions/User Manual/Troubleshooting9%

“Poor instructions”

Functionality-Overall4%

“Didn't work for me”

Material Quality3%

“the materials need to hold up over time and heavy”

Scratch Resistance3%

“Scratched the vintage window I was attempting to polish”

Brightness/Shine/Glow3%

“still no shine”

Paint Quality3%

“I been buffing paint for 40 years”

Product Condition3%

“Sent used”

Adhesion/Stickiness3%

“the diamond disc flies off when the glue heats up”

Top return reasons

Size-Overall25%
Functionality-Overall16%
Advertised Vs Actual Product9%
Defective Material/Parts8%
Compatibility-Overall7%
Value For Money6%
Quality-Overall5%
Durability3%
Material Quality3%
Scratch Resistance2%