styrofoam balls 4 inch
Skip itA small market ($37K/yr) — this niche doesn't clear our bar today.
Conversion
Great8.3%search→purchase rate — share of searches ending in a sale
Avg price
Great$15.22avg listing price — sweet spot $15–$100
Review moat
Great498.9avg incumbent reviews — the moat a new listing must climb
Price range
Good$6.68–$28.22cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Okay81%top-5 brand share — brands hold most of the demand
Returns
Okay3.8%return rate — above 5% kills the launch gate
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Competition
Okay64%top-5 click share — leaders hold, buyers still browse
Growth
Bad-26.4%90-day search growth — must beat 0% to launch
Market size
Bad$37K$37K/yr · 29K searches
According to Flapen's Amazon United States niche tracking, styrofoam balls 4 inch is a $37K/yr Amazon United States market (29K searches/yr). The top 5 brands hold 81% of demand. Demand peaks in Oct–Nov. Verdict: Skip it — 38/100.
Data updated Jul 8, 2026 · scored weekly · How we score niches
styrofoam balls 4 inch market data
- Units sold / yr
- 3K–4K
- avg 100–250/product
- Revenue / yr
- $46K–$61K
- units × avg price
- Conversion rate
- 8.3%
- Avg BSR
- #164
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 90%
- Out of stock
- 4.2%
- Avg brand age
- 54 months
- Avg seller age
- 193 days
Competition & brand share
The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them.Brands
14 falling
Sellers
20
Top-5 brand share
81%
Top 20: 100%
Top-5 click share
64%
Top 20: 100%
Open market
14%
- Crafare26%
- Crafjie17%
- Evershine16%
- Champion Sports16%
- AHKUNMT6%
- Meuey Lyot5%
- Open — no brand owns it (8 brands, 14%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -26.4% search growth over the last 90 days.Peak months: Oct, Nov · busiest ÷ quietest = 2.6×
Top styrofoam balls 4 inch search terms
- styrofoam balls 4 inch11K/yr
- 4 inch foam balls6K/yr
- 4 inch styrofoam balls6K/yr
- 4in styrofoam balls3K/yr
- 4 styrofoam balls4K/yr
Top styrofoam balls 4 inch 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 20 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Champion Sports Coated High Density Foam Ball 4 Inch Red
Champion Sports$7.524.3★695 rev
Evershine 24 Pack 4 Inch Craft Foam Ball - White Smooth Craft Foam Polystyrene Balls for DIY Craft and Art School Project
Evershine$28.224.6★1,054 rev
Crafjie 4 Inch Craft Foam Balls 24-Pack Supplies Foam Balls for Christmas DIY Arts and Crafts Smooth Polystyrene Foam Ball for Decoration Household School Projects White
Crafjie$25.254.7★566 rev
Crafare 4 Inch 4 Pack Foam Balls for Crafts White Polystyrene Smooth Craft Foam Balls for DIY Household School Projects Party Decoration
Crafare$9.854.6★851 rev
Crafare 4 Inch 2 Pack Foam Balls for Crafts White Polystyrene Round Foam Balls for Art Household DIY School Projects Party Ornaments Decoration
Crafare$7.934.6★851 rev
Newest
by launch date
2 Pack White Polystyrene Craft Balls 4 Inch Foam Balls for Crafts Smooth Round Ornament Ball for Easter Art Craft Household School Projects Christmas Party Decorations Weddings Gathering
Gsbnjuy$7.600 rev
Meuey Lyot 4 inch About 10.2 cm White Styrofoam Ball Foam Balls Craft Ball Foam Balls DIY Art Deco and Home Craft Project 6PCS
Meuey Lyot$11.7525 rev
Lyellfe 24 Pack Craft Foam Balls 4 Inch Round Polystyrene Crafts Balls for DIY Projects Christmas Ornaments School Modeling Drawing
Lyellfe$23.4714 rev
Styrofoam Balls 4 Inch 12PC Large White Foam Balls for Crafts DIY Craft Giant Foam Ball for Home and School Smooth Solid Round (Styrofoam-4in-12pc)
AHKUNMT$17.10415 rev
Styrofoam Half Balls 4 Inch 8PC Large White Half Foam Balls for Crafts DIY Craft Giant Foam Balls for Home and School Smooth Solid Round Balls (Half styrofoam-4in-8pc)
AHKUNMT$11.61408 rev
Trending
90-day click momentumEvershine 24 Pack 4 Inch Craft Foam Ball - White Smooth Craft Foam Polystyrene Balls for DIY Craft and Art School Project
Evershine$28.224.6★
2 Pack White Polystyrene Craft Balls 4 Inch Foam Balls for Crafts Smooth Round Ornament Ball for Easter Art Craft Household School Projects Christmas Party Decorations Weddings Gathering
Gsbnjuy$7.600.0★
Champion Sports Coated High Density Foam Ball 4 Inch Red
Champion Sports$7.524.3★
TFARC FOAM 4 Pack Foam Balls for Crafts 4.5-Inch Round White Polystyrene Spheres for DIY Projects Ornaments Classroom Festivals Decoration
TFARC FOAM$12.794.6★
Meuey Lyot 4 inch About 10.2 cm White Styrofoam Ball Foam Balls Craft Ball Foam Balls DIY Art Deco and Home Craft Project 6PCS
Meuey Lyot$11.754.2★
What buyers say about styrofoam balls 4 inch
What buyers praise and complain about, mined from review topics.What buyers love
“Great Fun”
“Great Value”
“Quality is great as well”
“The size is consistent and the surface looks clean and bright white”
“sturdy”
“Soft balls”
“Exactly as described”
“Just a good indoor ball for the price”
“do not make much noise on their own”
“Safer to play with — nothing broken”
What buyers complain about
“They are small”
“Inaccurate Size Claim”
“Choking hazard”
“Not worth $1 a ball”
Top return reasons
Common questions
- Is styrofoam balls 4 inch profitable to sell on Amazon United States?
- The niche generates $37K/yr across 20 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -26.4%. Flapen's verdict: Skip it (38/100).
- How competitive is the styrofoam balls 4 inch niche?
- 14 brands and 20 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 81% of demand.
- What do buyers complain about in styrofoam balls 4 inch?
- Top complaints mined from reviews: Size-Overall, Advertised Vs Actual Product, Choking. The return rate is 3.8%.
- When does demand for styrofoam balls 4 inch peak?
- Demand peaks in Oct–Nov; the busiest month runs 2.6× the quietest.
- What does it cost to enter the styrofoam balls 4 inch niche?
- Listings span $6.68–$28.22; the average listing price is $15.22 (sweet spot $15–$100). The average incumbent carries 499 reviews — the moat a new listing must climb.