Is size 4 basketball profitable to sell on Amazon United States?

The niche generates $322K/yr across 51 tracked products. 2 of 10 products launched in the last 360 days are still selling. 90-day search growth is +1.4%. Flapen's verdict: Worth a look (57/100).

How competitive is the size 4 basketball niche?

14 brands and 57 sellers compete. The top 5 products take 35% of clicks and top 5 brands hold 72% of demand.

What do buyers complain about in size 4 basketball?

Top complaints mined from reviews: Inflation/Deflation, Size-Overall, Quality-Overall. The return rate is 1.4%.

When does demand for size 4 basketball peak?

Demand peaks in Jan–Nov–Dec; the busiest month runs 5.5× the quietest.

What does it cost to enter the size 4 basketball niche?

Listings span $9.18–$32.90; the average listing price is $18.82 (sweet spot $15–$100). The average incumbent carries 1,683 reviews — the moat a new listing must climb.

size 4 basketball

Worth a look

Shows low returns (1.4%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Returns

Great1.4%

return rate — above 5% kills the launch gate

Avg price

Great$18.82

avg listing price — sweet spot $15–$100

Competition

Great35%

top-5 click share — an open shelf

Price range

Great$9.18–$32.90

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

Conversion

Good5.6%

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

Brand share

Good72%

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

Market size

Good$322K

$322K/yr · 307K searches

Review moat

Okay1,683.12

avg incumbent reviews — the moat a new listing must climb

Growth

Okay+1.4%

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

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

According to Flapen's Amazon United States niche tracking, size 4 basketball is a $322K/yr Amazon United States market (307K searches/yr). The top 5 brands hold 72% of demand. Demand peaks in Jan–Nov–Dec. Verdict: Worth a look — 57/100.

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

size 4 basketball market data

Units sold / yr: 15K–20K; avg 250–500/product
Revenue / yr: $282K–$376K; units × avg price
Conversion rate: 5.6%
Avg BSR: #47
Page quality: 0%
Prime: 100%
Sponsored: 96%
Out of stock: 4.8%
Avg brand age: 43 months
Avg seller age: 147 days

Competition & brand share

Clicks spread well past the top 5 (35% combined) — an open shelf where new products get seen.

Brands

14 falling

Sellers

Top-5 brand share

72%

Top 20: 100%

Top-5 click share

35%

Top 20: 74%

Open market

21%

KUYOTQ32%
Wisdom Leaves13%
WILSON13%
Mikasa8%
NEOGOAT7%
FAKOFIS6%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +1.4% search growth over the last 90 days.

Peak months: Jan, Nov, Dec · busiest ÷ quietest = 5.5×

Open Trend

Top size 4 basketball search terms

size 4 basketball121K/yr +1.4%4.1% conv.
kid basketball20K/yr +11.1%2.3% conv.
size 5 basketball youth12K/yr +29.6%4.7% conv.
size 4 basketball for kids26K/yr +0.4%5.5% conv.
25.5 inch basketball for kids24K/yr -29.1%4.8% conv.
basketball kids ages 4-811K/yr +12.8%2.9% conv.
27.5 basketball youth16K/yr -2.3%3.8% conv.
kids basketball size 49K/yr +2.7%4.2% conv.
kids basketballs8K/yr +0.9%1.3% conv.
youth basketball size 49K/yr +0.2%5.0% conv.

All search terms

Top size 4 basketball products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

KUYOTQ Kids Youth Size 4 (25.5) Basketball Premium Rubber Outdoor Youth Indoor Outdoor for Boys Girls Teen Game Sports Basketball Gifts (Deflated Red White Blue)

KUYOTQ$18.154.7★431 rev

Mikasa BX1006 Varsity Series Basketball Size 4 - 25.5

Mikasa$17.954.6★1,205 rev

WILSON NBA DRV Series Basketball - DRV Brown Size 5 - 27.5

WILSON$14.534.6★10,838 rev

KUYOTQ Kids Youth Size 5 (27.5) Basketball Premium Rubber Outdoor Youth Indoor Outdoor for Boys Girls Teen Game Sports Basketball Gifts (Deflated Red White Blue)

KUYOTQ$19.164.7★527 rev

BALSMART Size 4 for Kids Youth 25.5 Basketball for Boys and Girls Indoor Outdoor Play

BALSMART$17.404.5★203 rev

Newest

by launch date

NEOGOAT Pink Graffiti Size 4 Basketball - 25.5 Inch Rubber Outdoor Basketball Size 4 for Kids Youth Girls - Backyard & Court Play for Young Girls Athletes (Deflated Without Pump)

NEOGOAT$18.91150 rev

5mo ago

Wisdom Leaves Kids Youth Basketball Size 4 (25.5) Soft Basketball for Boys Girls Age 4-8 Small Indoor Outdoor Basket Balls for Training Basic SkillsDark Blue

Wisdom Leaves$19.382,678 rev

6mo ago

PIXUYE Size 4 Soft Lightweight Kids Basketball 25.5 Inch for Boys Girls Ages 5-8 Youth Indoor Outdoor Pool Training Play Birthday Gifts (line blue4)

PIXUYE$18.0229 rev

8mo ago

PIXUYE Size 4 Soft Lightweight Kids Basketball 25.5 Inch for Boys Girls Ages 5-8 Youth Indoor Outdoor Pool Training Play Birthday Gifts (Camo Blue)

PIXUYE$17.8129 rev

8mo ago

NEOGOAT Kids Youth Size 4 Basketball 25.5 Durable High-Bounce Thickened Rubber Mini Size 4 Green Basketball for in & Outdoor Play for Boys & Girls Ages 4-8 (Deflated Without Pump)

NEOGOAT$18.54150 rev

11mo ago

What buyers say about size 4 basketball

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

What buyers love

Quality-Overall18%

“Excellent Quality”

Size-Overall13%

“Good size”

Value For Money9%

“Great value”

Color8%

“The color is vibrant”

Grip7%

“Good grip”

Advertised Vs Actual Product5%

“it was exactly what he wanted”

Durability5%

“Very durable”

Inflation/Deflation4%

“Once you inflate the ball it's great”

Suitable For Indoor3%

“Great for indoor/outdoor”

Suitability Beginner2%

“Solid starter ball”

What buyers complain about

Inflation/Deflation20%

“Won't stay inflated”

Size-Overall11%

“Small basket ball”

Quality-Overall9%

“Bad quality”

Durability8%

“Ripped within hours”

Leak-Proof8%

“one of them leaks”

Flatness5%

“it always goes flat”

Grip4%

“Grip could be better”

Advertised Vs Actual Product3%

“falsely advertised diameter”

Product Condition2%

“Sent me a used ball”

Smell1%

“The ball even has the smell of a normal basketball”

Top return reasons

Size-Overall48%

Inflation/Deflation9%

Value For Money6%

Leak-Proof6%

Functionality-Overall5%

Advertised Vs Actual Product4%

Quality-Overall3%

Material Quality3%

Grip3%

Product Condition1%

Common questions

Is size 4 basketball profitable to sell on Amazon United States?: The niche generates $322K/yr across 51 tracked products. 2 of 10 products launched in the last 360 days are still selling. 90-day search growth is +1.4%. Flapen's verdict: Worth a look (57/100).
How competitive is the size 4 basketball niche?: 14 brands and 57 sellers compete. The top 5 products take 35% of clicks and top 5 brands hold 72% of demand.
What do buyers complain about in size 4 basketball?: Top complaints mined from reviews: Inflation/Deflation, Size-Overall, Quality-Overall. The return rate is 1.4%.
When does demand for size 4 basketball peak?: Demand peaks in Jan–Nov–Dec; the busiest month runs 5.5× the quietest.
What does it cost to enter the size 4 basketball niche?: Listings span $9.18–$32.90; the average listing price is $18.82 (sweet spot $15–$100). The average incumbent carries 1,683 reviews — the moat a new listing must climb.