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51

shark cartilage

Worth a look

Shows low returns (0.0%), but soft demand (+2.5% this quarter) keeps it on the watch list.

Market size 43Growth 28Conversion 54Competition 31Returns 100Price range 95Avg price 95Brand share 34Review moat 37Quality gap 55

Returns

Incredible0.0%

return rate — above 6% kills the launch gate

Avg price

Incredible$33.56

avg listing price — sweet spot $15–$100

Price range

Incredible$17.36–$79.77

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Conversion

Good4.4%

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

Market size

Okay$226K

$226K/yr · 153K searches

Review moat

Okay2,797.75

avg incumbent reviews — the moat a new listing must climb

Brand share

Okay85%

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

Competition

Okay66%

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

Growth

Okay+2.5%

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

Competition

The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.

Brands

10 rising

Sellers

16

Top-5 brand share

85%

Open market

11%

  • Generic43%
  • Natural medix25%
  • Jkrova6%
  • Euphea5%
  • FabLab5%
  • SIRUNES4%
  • Open — no brand owns it (4 brands, 11%)

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%$23K20%$45K30%$68K40%$90K1101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted

All 16 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +2.5% search growth over the last 90 days.
4K3KSepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.4×

Reviews

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

What buyers love

Joint Pain36%

“Helps Joint pain”

Quality-Overall18%

“A great improvement over the product I used previously”

Efficiency6%

“Effective”

Value For Money6%

“Worth the money”

Vitamin5%

“Excellent supplement”

Advertised Vs Actual Product4%

“Worked as advertised”

Ease Of Chewing/Swallowing3%

“The capsules are easy to take”

Muscle Pain Relief2%

“Great for bones”

Nutritional Content2%

“Excellent supplement”

Strength1%

“Effective”

What buyers complain about

Joint Pain15%

“Unfortunately, this did nothing to relieve my arthritis pain”

Functionality-Overall14%

“Did not work”

Pain Relief-Overall10%

“Years of discomfort”

Dosage8%

“Disappointed needed to take 3 dailey”

Value For Money7%

“Waste of money”

Side Effects4%

“NEGATIVE SIDE EFFECTS”

Quality-Overall3%

“don't think it's going through quality Assurance checks”

Sleep Quality3%

“Gave me insomnia”

Size-Overall3%

“Also pills were too big”

Acid Regulator/Stomach Ache Relief2%

“Made my stomach ache the first day I took it”

Top return reasons

Side Effects33%
Magnesium33%
Functionality-Overall33%