Ninja Kids Ball
Skip itA small market ($13K/yr) — this niche doesn't clear our bar today.
Avg price
Incredible$28.38avg listing price — sweet spot $15–$100
Review moat
Great427.67avg incumbent reviews — the moat a new listing must climb
Price range
Good$9.50–$127.87cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Okay55%top-5 click share — leaders hold, buyers still browse
Brand share
Okay79%top-5 brand share — brands hold most of the demand
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Growth
Okay+9.2%90-day search growth — must beat 0% to launch
Returns
Okay4.3%return rate — above 5% kills the launch gate
Conversion
Bad0.7%search→purchase rate — share of searches ending in a sale
Market size
Bad$13K$13K/yr · 64K searches
Is ninja kids ball profitable on Amazon?
According to Flapen's Amazon United States niche tracking, ninja kids ball is a $13K/yr Amazon United States market (64K searches/yr). The top 5 brands hold 79% of demand. Demand peaks in Aug–Dec. Verdict: Skip it — 38/100.
Data updated Jul 25, 2026 · scored weekly · How we score niches
ninja kids ball market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- Units sold / yr
- 250–500
- avg 0–100/product
- Revenue / yr
- $7K–$14K
- units × avg price
- Conversion rate
- 0.7%
- Avg BSR
- #2,594
- Page quality
- 0%
- Prime
- 70%
- Sponsored
- 48%
- Out of stock
- 11.7%
- Avg brand age
- 37 months
- Avg seller age
- 145 days
Competition: brands, sellers & click share
The top 5 products take 55% of clicks — established leaders, but buyers still shop beyond them.Brands
14 rising
Sellers
22
Top-5 brand share
79%
Top 20: 100%
Top-5 click share
55%
Top 20: 94%
Open market
17%
- Ninja Kidz35%
- Ball Baron21%
- Rzkipdy9%
- NINJA KIDZ TV7%
- PlayBolt6%
- Ninja kidz5%
- Open — no brand owns it (8 brands, 17%)
ninja kids ball demand & seasonality
Weekly Amazon search volume, last 104 weeks — +9.2% search growth over the last 90 days.Peak months: Aug, Dec · busiest ÷ quietest = 3.1×
Top ninja kids ball search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- ninja kidz mystery ball14K/yr
- ninja kids ball16K/yr
- ninja ball10K/yr
- ninja kidz ball9K/yr
- ninja balls3K/yr
- ninja kids mystery ball4K/yr
- ninja balls ninja kids2K/yr
- ninja kids balls2K/yr
- ninja kid ball2K/yr
- ninja kids ninja ball1K/yr
Top ninja kids ball 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Ball Baron Ninja Ultra Shiny Pinballs Made in The USA! (12 Pack)
Ball Baron$29.714.3★29 rev
Ninja Kidz Official Original Logo Girls Shirt Dress Your Ninja Kids in Cool Kids Clothes Ninja Shirt Merch & Tee for Girls Raspberry Pink T Shirt Size Youth Small
Ninja Kidz$26.594.5★495 rev
Rzkipdy Silent Basketball Size 5 (27.5) Not Vacuum Shipped - 2025 Upgraded Airless Soft Foam Ball Soundless for Quiet Dribbling and Indoor Training Real Feel Higher Bounce No Noise
Rzkipdy$27.154.3★311 rev
Ninja Kidz Official Original Logo Boys Pullover Hoodie Dress your Ninja Kids in Cool Kids Clothes Ninja Sweatshirt Merch & Boys Sweaters Orange Hoodie Size Youth Small
Ninja Kidz$40.404.7★482 rev
8.5 Sports Balls for Kids & Toddlers - (Pack of 4) Rubber Inflatable Multi-Sport Ball Set - Football Soccer Ball Basketball Playground Ball & Pump - Birthday Gift Toys for Boys & Girls
PlayBolt$18.684.6★1,575 rev
Newest
by launch date
Ninja Kidz Official Eyes T-Shirt Dress Your Ninja Kids in Cool Kids Clothes Ninja Shirt Merch & Tee for Girls and Boys Purple T Shirt Size Youth Large
NINJA KIDZ TV$29.922 rev
Ninja Kidz Official Eyes T-Shirt Dress Your Ninja Kids in Cool Kids Clothes Ninja Shirt Merch & Tee for Girls and Boys Orange T Shirt Size Youth Small
NINJA KIDZ TV$29.812 rev
Official Merch Ninja Kidz Headband Black Birthday Boy Headband Birthday Headbands Sports Headbands for Girls and Boys Comfortable Breathable & Stretchy
Ninja Kidz$9.974 rev
Ninja Kidz Mystery Figures - Series 2 Collectible Mini Figures Officially Licensed Ninja Kids Merch -24pk Party Pack
Ninja kidz$127.870 rev
Rzkipdy Silent Basketball Size 5 (27.5) Not Vacuum Shipped - 2025 Upgraded Airless Soft Foam Ball Soundless for Quiet Dribbling and Indoor Training Real Feel Higher Bounce No Noise
Rzkipdy$27.15311 rev
Trending
90-day click momentum
Gejoy 24 Pieces Soft Foam Balls Bulk Lightweight Mini Balls for Safe Indoor Toys Fun Assorted Colors Sponge Balls Birthday Party Favors Bag Gifts for Boys and Girls(1.57 Inch)
Gejoy$13.684.4★
Official Merch Ninja Kidz Headband Black Birthday Boy Headband Birthday Headbands Sports Headbands for Girls and Boys Comfortable Breathable & Stretchy
Ninja Kidz$9.975.0★
ZOOJOY Pack of 2 Cartoon Playground Balls Balls for Toddler 3-12 8.5 Rubber Ball Bouncy Kickball Indoor & Outdoor Ball Game for Kids with Pump
ZOOJOY$22.524.4★
Ninja Kidz Official Original Logo Tee Boys Shirt Dress Your Ninja Kids in Cool Kids Clothes Ninja Shirt Merch & Tee for Boys Green Youth Size X-Small
Ninja Kidz$26.944.7★
Ninja Kidz Official Eyes T-Shirt Dress Your Ninja Kids in Cool Kids Clothes Ninja Shirt Merch & Tee for Girls and Boys Orange T Shirt Size Youth Small
NINJA KIDZ TV$29.815.0★
What reviews say buyers love and hate about ninja kids ball
What buyers praise and complain about, mined from review topics.What buyers love
“This is truly quiet”
“cool toy”
“The quality of these is very apparent when you get them”
“Great for indoor use”
“They are a good size”
“Work as advertised”
“this is 100% worth the purchase”
“easy to inflate”
“Great durability for the price”
“Ball is soft”
What buyers complain about
“Fell Apart”
“This is a smaller ball”
“very cheap quality”
“you can get it much cheaper at the stores”
“Misleading”
“too much bounce, silly and not really fun to play with”
“looked very used”
“I see the material of this ball just comes off after few days”
“leaves a mess”
“Ok But not as colorful”
Top return reasons
Common ninja kids ball questions
- Is ninja kids ball profitable to sell on Amazon United States?
- The niche generates $13K/yr across 27 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 (38/100).
- How competitive is the ninja kids ball niche?
- 14 brands and 22 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 79% of demand.
- What do buyers complain about in ninja kids ball?
- Top complaints mined from reviews: Durability, Size-Overall, Quality-Overall. The return rate is 4.3%.
- When does demand for ninja kids ball peak?
- Demand peaks in Aug–Dec; the busiest month runs 3.1× the quietest.
- What does it cost to enter the ninja kids ball niche?
- Listings span $9.50–$127.87; the average listing price is $28.38 (sweet spot $15–$100). The average incumbent carries 428 reviews — the moat a new listing must climb.