Marv Balls
Skip itA small market ($56K/yr) — this niche doesn't clear our bar today.
Returns
Great1.1%return rate — above 5% kills the launch gate
Avg price
Great$62.56avg listing price — sweet spot $15–$100
Conversion
Good6.9%search→purchase rate — share of searches ending in a sale
Review moat
Good919.92avg incumbent reviews — the moat a new listing must climb
Growth
Okay+9.7%90-day search growth — must beat 0% to launch
Brand share
Okay83%top-5 brand share — brands hold most of the demand
Price range
Bad$17.81–$378.84cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Bad75%top-5 click share — a locked-up shelf
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Market size
Bad$56K$56K/yr · 13K searches
Is marv balls profitable on Amazon?
According to Flapen's Amazon United States niche tracking, marv balls is a $56K/yr Amazon United States market (13K searches/yr). The top 5 brands hold 83% of demand. Verdict: Skip it — 42/100.
Data updated Jul 25, 2026 · scored weekly · How we score niches
marv balls market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- Units sold / yr
- 750–1K
- avg 0–100/product
- Revenue / yr
- $47K–$63K
- units × avg price
- Conversion rate
- 6.9%
- Avg BSR
- #264
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 85%
- Out of stock
- 0.0%
- Avg brand age
- 54 months
- Avg seller age
- 207 days
Competition: brands, sellers & click share
The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.Brands
10 rising
Sellers
19
Top-5 brand share
83%
Top 20: 100%
Top-5 click share
75%
Top 20: 100%
Open market
11%
- Marv44%
- Hungdao11%
- CHAMPRO10%
- Thorza10%
- GoSports8%
- SunNordic6%
- Open — no brand owns it (4 brands, 11%)
Top marv balls search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- marv balls8K/yr
- marv plyo balls3K/yr
- marv balls velo set2K/yr
Top marv balls 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.
All 13 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Marv Balls - Velo Set (Soft Shell use for Plyo Drills) Original PlyoMetric Ball with Seams Velocity Development Set - 6 Weighted Baseballs
Marv$69.834.8★184 rev
Champro Training Baseballs Set of 6 (Red/Maroon/Green/Yellow/Blue/Black 9-Inch)
CHAMPRO$51.124.7★128 rev
Thorza Lightweight Weighted Baseball Training Set 3oz 4oz & 6oz Practice Balls for Pitching Mechanics Throwing Accuracy & Velocity Training Set of 3
Thorza$23.454.5★82 rev
GoSports 2.8 inch Weighted Training Baseballs - Hitting & Pitching Training for All Skill Levels - Improve Power and Mechanics
GoSports$19.584.8★9,450 rev
Hungdao 6 Pcs Weighted Plyo Training Balls Variable Plyo Weighted Balls Practice Weighted Baseball Weighted Ball Set for Throwing Pitching Power Improving Accessories 6 Colors (3.5 to 32 Oz)
Hungdao$30.884.5★41 rev
Newest
by launch date
Marv Sunken Seam Foam Pitching Machine Baseballs 5 Dozen Team Pack Durable High Velocity 3oz Training Balls
Marv$378.841 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$28.94100 rev
GoSports 2.8 inch Weighted Training Baseballs - Hitting & Pitching Training for All Skill Levels - Improve Power and Mechanics
GoSports$19.589,450 rev
SunNordic 6/9 Pack Seam Weighted Baseball Set with Resistance Bands
SunNordic$38.2080 rev
Set of 6 Weighted Balls with Seams & Free Throwing Program | Throwing Arm Strength & Velocity Training | 3.5oz 5oz 7oz 14oz 21oz 32oz | Carry Bag Included
Home of Stadium Sports Performance$39.6982 rev
Trending
90-day click momentumMarv Sunken Seam Foam Pitching Machine Baseballs 5 Dozen Team Pack Durable High Velocity 3oz Training Balls
Marv$378.845.0★
Volvik Marvel Golf Balls 4pk-Captain America
Volvik$17.814.7★
Thorza Lightweight Weighted Baseball Training Set 3oz 4oz & 6oz Practice Balls for Pitching Mechanics Throwing Accuracy & Velocity Training Set of 3
Thorza$23.454.5★
Hungdao 6 Pcs Weighted Plyo Training Balls Variable Plyo Weighted Balls Practice Weighted Baseball Weighted Ball Set for Throwing Pitching Power Improving Accessories 6 Colors (3.5 to 70.5 Oz)
Hungdao$38.974.5★
Champro Training Baseballs Set of 6 (Red/Maroon/Green/Yellow/Blue/Black 9-Inch)
CHAMPRO$51.124.7★
What reviews say buyers love and hate about marv balls
What buyers praise and complain about, mined from review topics.What buyers love
“have helped us get in a lot of quality reps together”
“Good price good balls”
“They work so well for softball batting practice”
“As described”
“Durable”
“Great set of weighted balls”
“Worked great”
“They are soft”
“Good for batting practice”
“Nice and bright and does the job”
What buyers complain about
“Too heavy for 10 & under kids”
“the word softball should not be in the description”
“A little bigger than a baseball”
Top return reasons
Common marv balls questions
- Is marv balls profitable to sell on Amazon United States?
- The niche generates $56K/yr across 13 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is +9.7%. Flapen's verdict: Skip it (42/100).
- How competitive is the marv balls niche?
- 10 brands and 19 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 83% of demand.
- What do buyers complain about in marv balls?
- Top complaints mined from reviews: Weight Heavy, Advertised Vs Actual Product, Size-Overall. The return rate is 1.1%.
- What does it cost to enter the marv balls niche?
- Listings span $17.81–$378.84; the average listing price is $62.56 (sweet spot $15–$100). The average incumbent carries 920 reviews — the moat a new listing must climb.