Is slam ball profitable to sell on Amazon United States?

The niche generates $82K/yr across 16 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +3.6%. Flapen's verdict: Skip it (40/100).

How competitive is the slam ball niche?

11 brands and 14 sellers compete. The top 5 products take 68% of clicks and top 5 brands hold 77% of demand.

What do buyers complain about in slam ball?

Top complaints mined from reviews: Inflation/Deflation, Size-Overall, Durability. The return rate is 3.2%.

When does demand for slam ball peak?

Demand peaks in Dec; the busiest month runs 2.3× the quietest.

What does it cost to enter the slam ball niche?

Listings span $16.85–$64.78; the average listing price is $31.94 (sweet spot $15–$100). The average incumbent carries 7,206 reviews — the moat a new listing must climb.

slam ball

Skip it

A small market ($82K/yr) — this niche doesn't clear our bar today.

Avg price

Incredible$31.94

avg listing price — sweet spot $15–$100

Price range

Incredible$16.85–$64.78

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

Conversion

Good4.8%

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

Returns

Okay3.2%

return rate — above 6% kills the launch gate

Brand share

Okay77%

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

Growth

Okay+3.6%

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

Competition

Okay68%

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

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Review moat

Bad7,205.5

avg incumbent reviews — the moat a new listing must climb

Market size

Bad$82K

$82K/yr · 54K searches

According to Flapen's Amazon United States niche tracking, slam ball is a $82K/yr Amazon United States market (54K searches/yr). The top 5 brands hold 77% of demand. Demand peaks in Dec. Verdict: Skip it — 40/100.

Data updated Jul 17, 2026 · scored weekly · How we score niches

slam ball market data

Units sold / yr: 3K–3K; avg 100–250/product
Revenue / yr: $80K–$96K; units × avg price
Launch success: —; 1 of 1 new (360d)
Conversion rate: 4.8%
Avg BSR: #11
Page quality: 0%
Prime: 94%
Sponsored: 81%
Out of stock: 1.9%
Avg brand age: 73 months
Avg seller age: 217 days

Competition & brand share

The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them.

Brands

11 flat

Sellers

Top-5 brand share

77%

Top 20: 100%

Top-5 click share

68%

Top 20: 100%

Open market

17%

ProsourceFit45%
Amazon Basics10%
Rage Fitness9%
MARCY8%
Champion Sports6%
Yes4All5%
Open — no brand owns it (5 brands, 17%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +3.6% search growth over the last 90 days.

Peak months: Dec · busiest ÷ quietest = 2.3×

Open Trend

Top slam ball search terms

medicine ball 20lbs8K/yr +6.7%3.6% conv.
20 lb medicine ball10K/yr -6.8%4.5% conv.
20lb medicine ball8K/yr +2.8%4.2% conv.
slam ball 20 lbs7K/yr -0.9%3.9% conv.
20 pound medicine ball4K/yr +19.0%3.8% conv.
20 lb wall ball3K/yr +28.8%2.2% conv.
20lb wall ball3K/yr -1.1%3.3% conv.
20 lb slam ball3K/yr -6.9%5.7% conv.
medicine ball 20 lbs5K/yr +14.9%3.7% conv.
20lb slam ball3K/yr +2.0%6.9% conv.

All search terms

Top slam ball 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 16 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

ProsourceFit Slam Medicine Ball Classic Dead Weight Balls for Strength and Conditioning Exercises Cardio and Core Workouts 20lb Black

ProsourceFit$26.584.7★4,486 rev

ProsourceFit Slam Medicine Ball Tread Textured Grip Dead Weight Balls for Strength and Conditioning Exercises Cardio and Core Workouts 20lb Black

ProsourceFit$28.544.7★4,486 rev

Amazon Basics Heavy-Duty Slam Medicine Balls for Exercise Weighted Design 20lb Black 2-Pack

Amazon Basics$26.364.7★415 rev

Rage Fitness Slam Ball 10 15 20lb Medicine Balls Tread Texture For Firm Grip Full Body Workout Dynamic Weighted Balls for Exercise Smash Balls for Strength Conditioning Cardio and Core Workouts

Rage Fitness$27.744.6★342 rev

Marcy 20 lb Slam Ball Dead Weight Sand-Filled Medicine Ball with Durable PVC Shell & Textured Grip Non-Bounce Workout Ball for Slams Tosses Core & Full Body Training MCSB-020

MARCY$29.214.7★98 rev

Newest

by launch date

Marcy 20 lb Slam Ball Dead Weight Sand-Filled Medicine Ball with Durable PVC Shell & Textured Grip Non-Bounce Workout Ball for Slams Tosses Core & Full Body Training MCSB-020

MARCY$29.2198 rev

11mo ago

Amazon Basics Heavy-Duty Slam Medicine Balls for Exercise Weighted Design 20lb Black 2-Pack

Amazon Basics$26.36415 rev

1y ago

Rage Fitness Slam Ball 10 15 20lb Medicine Balls Tread Texture For Firm Grip Full Body Workout Dynamic Weighted Balls for Exercise Smash Balls for Strength Conditioning Cardio and Core Workouts

Rage Fitness$27.74342 rev

2y ago

APEXUP Yoga Ball 660 lbs Anti-Burst Exercise Ball with Pump 5 Sizes (L (23~26) 65cm Black)

APEXUP$16.854,937 rev

2y ago

Yes4All Slam Balls 10-40lb Weighted Ball Weight Durable PVC Sand Filled Workout Dynamic Slam Ball for Strength Training Triangle Teal 20lbs

Yes4All$29.4314,036 rev

5y ago

What buyers say about slam ball

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

What buyers love

Quality-Overall24%

“The quality of this ball is quite good”

Value For Money9%

“Good value”

Exercise/Sports Suitability8%

“Great Exercise Ball”

Advertised Vs Actual Product8%

“As advertised”

Inflation/Deflation7%

“Nice inflatable device”

Durability6%

“it is very durable”

Ease Of Use4%

“Easy to use”

Pain Relief-Overall3%

“Great back relief”

Size-Overall3%

“Good size”

Stretchability/Expandability/Elasticity3%

“Great for stretching”

What buyers complain about

Inflation/Deflation13%

“It deflated constantly”

Size-Overall12%

“Not true to size”

Durability11%

“Broke day 2”

Quality-Overall9%

“Cheap and trash”

Leak-Proof4%

“The first developed a very fast leak after 6 months”

Balance/Stability3%

“The balance of the ball is way off”

Product Condition3%

“Bought new received used”

Strength3%

“Not sturdy”

Value For Money3%

“Not worth the money”

Grip2%

“I really dislike the texture and grip”

Top return reasons

Size-Overall58%

Inflation/Deflation7%

Value For Money5%

Weight Heavy4%

Advertised Vs Actual Product4%

Functionality-Overall3%

Leak-Proof3%