8 lb medicine ball
Skip itA small market ($72K/yr) — this niche doesn't clear our bar today.
Avg price
Incredible$29.26avg listing price — sweet spot $15–$100
Conversion
Good5.6%search→purchase rate — share of searches ending in a sale
Competition
Good47%top-5 click share — leaders hold, buyers still browse
Price range
Good$11.72–$159.62cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Good74%top-5 brand share — brands hold most of the demand
Returns
Okay3.2%return rate — above 6% kills the launch gate
Growth
Okay+9.2%90-day search growth — must beat 0% to launch
Review moat
Bad4,667.9avg incumbent reviews — the moat a new listing must climb
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Market size
Bad$72K$72K/yr · 44K searches
According to Flapen's Amazon United States niche tracking, 8 lb medicine ball is a $72K/yr Amazon United States market (44K searches/yr). The top 5 brands hold 74% of demand. Demand peaks in Jun. Verdict: Skip it — 45/100.
Data updated Jul 17, 2026 · scored weekly · How we score niches
8 lb medicine ball market data
- Units sold / yr
- 3K–4K
- avg 100–250/product
- Revenue / yr
- $88K–$117K
- units × avg price
- Launch success
- —
- 0 of 4 new (360d)
- Conversion rate
- 5.6%
- Avg BSR
- #38
- Page quality
- 0%
- Prime
- 97%
- Sponsored
- 90%
- Out of stock
- 12.6%
- Avg brand age
- 76 months
- Avg seller age
- 203 days
Competition & brand share
The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them.Brands
14 rising
Sellers
19
Top-5 brand share
74%
Top 20: 100%
Top-5 click share
47%
Top 20: 88%
Open market
18%
- GOOGIC22%
- Amazon Basics16%
- Tone Fitness15%
- ProsourceFit12%
- Champion Sports9%
- STRPRETTY BASIC8%
- Open — no brand owns it (8 brands, 18%)
Demand & seasonality
Weekly Amazon search volume, last 102 weeks — +9.2% search growth over the last 90 days.Peak months: Jun · busiest ÷ quietest = 1.9×
Top 8 lb medicine ball search terms
- 8lb medicine ball12K/yr
- 8 lb medicine ball11K/yr
- 8 pound medicine ball12K/yr
- medicine ball 8lb8K/yr
Top 8 lb medicine 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.
All 30 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Tone Fitness Soft Weighted Toning Ball Teal 8 Lbs
Tone Fitness$11.724.7★3,258 rev
GOOGIC Slam Ball 8 lbs Medicine Ball Weighted Balls for Exercise and Workout Strength Cardio Cross-Training and Core Workouts (8LB - Black)
GOOGIC$24.394.6★587 rev
Amazon Basics Weighted Medicine Ball for Core Strength Strength Training Full-Body Workouts and Balance Exercises 8 Pounds Red/Black
Amazon Basics$21.784.8★13,637 rev
ProsourceFit Weighted Rubber Medicine Ball for Full Body Workouts 8 lb
ProsourceFit$29.754.8★805 rev
STRPRETTY BASIC Medicine Ball 8 lbs Slam Ball Weighted Balls for Exercise Strength and Crossfit Workout (Dynamic Black)
STRPRETTY BASIC$23.274.7★373 rev
Newest
by launch date
GOOGIC Slam Ball 8 lbs Medicine Ball Weighted Balls for Exercise and Workout Strength Cardio Cross-Training and Core Workouts (8LB - Purple)
GOOGIC$23.26587 rev
GOOGIC Slam Ball 8 lbs Medicine Ball Weighted Balls for Exercise and Workout Strength Cardio Cross-Training and Core Workouts (8LB - Black)
GOOGIC$23.16587 rev
GOOGIC Slam Ball 8 lbs Medicine Ball Weighted Balls for Exercise and Workout Strength Cardio Cross-Training and Core Workouts (8LB - Green)
GOOGIC$23.12587 rev
STRPRETTY BASIC Medicine Ball 8 lbs Slam Ball Weighted Balls for Exercise Strength and Crossfit Workout (Dynamic Orange)
STRPRETTY BASIC$23.42373 rev
RitFit Weighted Medicine Ball Set - 6LB / 8LB / 10LB / 12LB Non-Slip Rubber Shell & Dual Texture Grip - Workout Exercise Ball for Core Strength Balance Training Coordination Fitness
RitFit$159.62413 rev
Trending
90-day click momentumSTRPRETTY BASIC Medicine Ball 8 lbs Slam Ball Weighted Balls for Exercise Strength and Crossfit Workout (Dynamic Orange)
STRPRETTY BASIC$23.424.7★
GOOGIC Slam Ball 8 lbs Medicine Ball Weighted Balls for Exercise and Workout Strength Cardio Cross-Training and Core Workouts (8LB - Black)
GOOGIC$23.164.6★
GOOGIC Slam Ball 8 lbs Medicine Ball Weighted Balls for Exercise and Workout Strength Cardio Cross-Training and Core Workouts (8LB - Purple)
GOOGIC$23.264.6★
STRPRETTY BASIC Medicine Ball 8 lbs Slam Ball Weighted Balls for Exercise Strength and Crossfit Workout (Dynamic Black)
STRPRETTY BASIC$23.274.7★
GOOGIC Slam Ball 8 lbs Medicine Ball Weighted Balls for Exercise and Workout Strength Cardio Cross-Training and Core Workouts (8LB - Green)
GOOGIC$23.124.6★
What buyers say about 8 lb medicine ball
What buyers praise and complain about, mined from review topics.What buyers love
“Appears to have been well made”
“As advertised”
“Good value”
“Great quality, holds up really well so far, my son uses it at least 3 times a week for the past few months and it's great”
“The ball inflates easily with the included pump”
“Great Exercise Ball”
“easily grippable”
“Good size”
“Easy to use”
“are functional”
What buyers complain about
“Broke within a month”
“Not true to size”
“Deflates”
“Cheap and trash”
“its got a leak”
“Kind of small and flimsy”
“they are quite expensive”
“this is currently to heavy for me to do that”
“The balance of the ball is way off”
“Bought new received used”
Top return reasons
Common questions
- Is 8 lb medicine ball profitable to sell on Amazon United States?
- The niche generates $72K/yr across 30 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is +9.2%. Flapen's verdict: Skip it (45/100).
- How competitive is the 8 lb medicine ball niche?
- 14 brands and 19 sellers compete. The top 5 products take 47% of clicks and top 5 brands hold 74% of demand.
- What do buyers complain about in 8 lb medicine ball?
- Top complaints mined from reviews: Durability, Size-Overall, Inflation/Deflation. The return rate is 3.2%.
- When does demand for 8 lb medicine ball peak?
- Demand peaks in Jun; the busiest month runs 1.9× the quietest.
- What does it cost to enter the 8 lb medicine ball niche?
- Listings span $11.72–$159.62; the average listing price is $29.26 (sweet spot $15–$100). The average incumbent carries 4,668 reviews — the moat a new listing must climb.