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49

Ninja Stars

Skip it

Weak search conversion (0.5%) — this niche doesn't clear our bar today.

Market size 12Growth 23Conversion 6Competition 59Returns 93Price range 36Avg price 95Brand share 81Review moat 62Quality gap 70

Avg price

Incredible$33.47

avg listing price — sweet spot $15–$100

Returns

Great1.1%

return rate — above 5% kills the launch gate

Brand share

Great54%

top-5 brand share — no brand owns this niche

Quality gap

Good4.3★

avg incumbent rating — lower means beatable quality

Review moat

Good1,026.92

avg incumbent reviews — the moat a new listing must climb

Competition

Good49%

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

Price range

Okay$5.11–$238.60

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

Growth

Bad-5.0%

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

Market size

Bad$50K

$50K/yr · 291K searches

Conversion

Bad0.5%

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

Is ninja stars profitable on Amazon?

According to Flapen's Amazon United States niche tracking, ninja stars is a $50K/yr Amazon United States market (291K searches/yr). The top 5 brands hold 54% of demand. Demand peaks in Nov–Dec. Verdict: Skip it — 49/100.

Data updated Jul 25, 2026 · scored weekly · How we score niches

ninja stars market size & sales

Units sold, revenue, conversion and listing quality across the tracked shelf.
Units sold / yr
2K–3K
avg 0–100/product
Revenue / yr
$67K–$84K
units × avg price
Conversion rate
0.5%
Avg BSR
#1,729
Page quality
0%
Prime
88%
Sponsored
46%
Out of stock
3.8%
Avg brand age
55 months
Avg seller age
186 days

Competition: brands, sellers & click share

The top 5 products take 49% of clicks — established leaders, but buyers still shop beyond them.

Brands

21 falling

Sellers

44

Top-5 brand share

54%

Top 20: 99%

Top-5 click share

49%

Top 20: 96%

Open market

46%

  • Crlincen25%
  • OYEAL7%
  • Woxer6%
  • YWMSGM6%
  • TIETHEKNOT5%
  • Smith & Wesson5%

ninja stars demand & seasonality

Weekly Amazon search volume, last 104 weeks — -5.0% search growth over the last 90 days.
23K18KHoliday '24Holiday '25SepDecMarJunAugNovMarMay

Peak months: Nov, Dec · busiest ÷ quietest = 3.4×

Top ninja stars search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.
  • throwing stars153K/yr
  • throwing stars metal26K/yr
  • ninja throwing stars metal23K/yr
  • chinese throwing stars16K/yr
  • throwing star15K/yr
  • throwing weapons11K/yr
  • ninja stars metal8K/yr
  • metal throwing stars7K/yr
  • throwing stars real7K/yr
  • throwing stars metal weapon for adults5K/yr
All search terms

Top ninja stars products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

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%$20K1101001K10K 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 24 tracked products in this niche — three views at once, no toggling.

What reviews say buyers love and hate about ninja stars

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

What buyers love

Fun/Entertainment Experience19%

“Fun game”

Quality-Overall13%

“Good quality”

Value For Money11%

“Best value out there”

Sharpness11%

“Fun throwing knives”

Advertised Vs Actual Product4%

“Better than expected”

Ease Of Use4%

“EASE OF USE:”

Durability3%

“these are durable”

Balance/Stability3%

“Great balance”

Weight Light3%

“Short and light”

Size-Overall2%

“Good size”

What buyers complain about

Quality-Overall17%

“Not good quality”

Durability10%

“Broken”

Size-Overall8%

“Too small”

Sharpness7%

“dull”

Weight Light6%

“Junk to light weight to be any use”

Hard Feel4%

“Brittle”

Strength3%

“Flimsy and bot well built”

Adhesion/Stickiness3%

“require exceptional amount of force to get them to stick”

Strap/String Quality2%

“Literally immediately, the one of the straps broke without me putting it on”

Handle Quality2%

“Cord from the handles has fallen off almost immediately. first use”

Top return reasons

Size-Overall23%
Advertised Vs Actual Product10%
Quality-Overall7%
Functionality-Overall7%
Defective Material/Parts7%
Sharpness6%
Material Quality4%
Weight Light4%
Value For Money4%
Durability3%

Common ninja stars questions

Is ninja stars profitable to sell on Amazon United States?
The niche generates $50K/yr across 24 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is -5.0%. Flapen's verdict: Skip it (49/100).
How competitive is the ninja stars niche?
21 brands and 44 sellers compete. The top 5 products take 49% of clicks and top 5 brands hold 54% of demand.
What do buyers complain about in ninja stars?
Top complaints mined from reviews: Quality-Overall, Durability, Size-Overall. The return rate is 1.1%.
When does demand for ninja stars peak?
Demand peaks in Nov–Dec; the busiest month runs 3.4× the quietest.
What does it cost to enter the ninja stars niche?
Listings span $5.11–$238.60; the average listing price is $33.47 (sweet spot $15–$100). The average incumbent carries 1,027 reviews — the moat a new listing must climb.