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56

ice machine for knee after surgery

Worth a look

Shows a $6.8M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 99Growth 28Conversion 26Competition 76Returns 20Price range 3Avg price 48Brand share 86Review moat 70Quality gap 65

Market size

Incredible$6.8M

$6.8M/yr · 1.7M searches

Brand share

Great49%

top-5 brand share — no brand owns this niche

Competition

Great39%

top-5 click share — an open shelf

Review moat

Good683.66

avg incumbent reviews — the moat a new listing must climb

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Avg price

Okay$190.57

avg listing price — sweet spot $15–$100

Growth

Okay+2.4%

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

Conversion

Okay2.1%

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

Returns

Bad7.3%

return rate — above 6% kills the launch gate

Price range

Bad$19.82–$2945.18

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

Competition

Clicks spread well past the top 5 (39% combined) — an open shelf where new products get seen.

Brands

35 rising

Sellers

45

Top-5 brand share

49%

Open market

46%

  • Polar Products16%
  • ONLYCARE13%
  • GALINAND10%
  • ICYTHRP5%
  • ICIDRION5%
  • CUEME5%

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%3%$205K6%$410K9%$615K12%$821K1101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 47 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +2.4% search growth over the last 90 days.
35K25KPrime Day '25SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.1×

Reviews

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

What buyers love

Ease Of Use14%

“easy to follow”

Joint Pain11%

“Great Therapy Tool for joint replacement”

Quality-Overall11%

“The build quality seems fine”

Efficiency9%

“Works Well”

Value For Money7%

“Great value”

Size-Overall4%

“fits securely”

Advertised Vs Actual Product4%

“As advertised”

Cold Relief4%

“Essential Cold Therapy Relief”

Temperature Retention3%

“Stays cold”

Assembly/Installation2%

“Setup was quick”

What buyers complain about

Leak-Proof18%

“It leaks”

Durability8%

“Stopped working after one use”

Quality-Overall5%

“Low quality”

Size-Overall5%

“It's quite small”

Value For Money4%

“Not worth it”

Functionality-Overall4%

“Did not work”

Heating4%

“It doesn't stay cool for very long”

Weight Heavy3%

“It is bulky”

Temperature Retention2%

“don't stay cold for very long”

Ease Of Use2%

“Kind of difficult to attach by yourself”

Top return reasons

Leak-Proof19%
Size-Overall16%
Advertised Vs Actual Product10%
Functionality-Overall9%
Joint Pain7%
Value For Money3%
Cold Relief3%
Ease Of Use3%
Weight Heavy3%
Durability2%