---
title: "28.5 Basketball Indoor — $437K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/sports-outdoors/28-5-basketball-indoor"
last_updated: "2026-08-10T22:05:15.221Z"
locale: en
meta:
description: "Niche score 55/100 · $437K/yr market · 241K searches/yr · $30.15 avg price. Soft demand (-19.9% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 55/100 · $437K/yr market · 241K searches/yr · $30.15 avg price. Soft demand (-19.9% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:title": "28.5 Basketball Indoor — $437K/yr Amazon US Niche (2026) - Flapen"
---
# **28.5 basketball indoor**
**Worth a look**
Shows a sweet-spot price point ($30.15 avg), but soft demand (-19.9% this quarter) keeps it on the watch list.
Market size 57Growth 15Conversion 67Competition 79Returns 85Price range 93Avg price 95Brand share 32Review moat 41Quality gap 30
**Avg price**
**Incredible****$30.15**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$12.88–$93.23**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Returns**
**Great****1.5%**
return rate — above 5% kills the launch gate
**Competition**
**Great****36%**
top-5 click share — an open shelf
**Conversion**
**Good****6.0%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Good****$437K**
$437K/yr · 241K searches
**Review moat**
**Okay****2,377.84**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Okay****86%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-19.9%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, 28.5 basketball indoor is a $437K/yr Amazon United States market (241K searches/yr). The top 5 brands hold 86% of demand. Verdict: Worth a look — 55/100.
Data updated Jul 22, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **28.5 basketball indoor market data**
- **Units sold / yr**
- **15K–20K**
- avg 250–500/product
- **Revenue / yr**
- **$452K–$603K**
- units × avg price
- **Conversion rate**
- **6.0%**
- **Avg BSR**
- **#85**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **86%**
- **Out of stock**
- **1.4%**
- **Avg brand age**
- **49 months**
- **Avg seller age**
- **139 days**
## **Competition & brand share**
Clicks spread well past the top 5 (36% combined) — an open shelf where new products get seen.
**Brands**
**14 **▲rising
**Sellers**
**49**
**Top-5 brand share**
**86%**
Top 20: 100%
**Top-5 click share**
**36%**
Top 20: 79%
**Open market**
**12%**
- WILSON60% - Spalding10% - BALSMART6% - AND16% - PECOGO3% - Senston3% - Open — no brand owns it (8 brands, 12%)
## **Top 28.5 basketball indoor search terms**
- **outdoor basketball size 6**16K/yr-14.4%5.1% conv. - **size 6 basketball outdoor**15K/yr+20.8%5.0% conv. - **28.5 basketball indoor/outdoor**26K/yr-31.2%4.8% conv. - **wilson basketball size 6**16K/yr-8.3%3.4% conv. - **28.5 basketball outdoor**13K/yr-5.7%5.7% conv. - **28.5 basketball indoor**43K/yr-47.8%2.4% conv. - **indoor basketball size 6**16K/yr-32.9%2.8% conv. - **size 6 basketball indoor/outdoor**11K/yr-10.7%4.9% conv. - **size 6 basketball indoor**19K/yr-35.6%2.9% conv. - **size 6 outdoor basketball**6K/yr+4.4%6.1% conv. [**All search terms **](https://flapen.com/research/us/sports-outdoors/28-5-basketball-indoor/search-terms)
## **Top 28.5 basketball indoor 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.
0%4%$17K8%$35K12%$52K16%$70K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**WILSON NCAA Verified Indoor/Outdoor Basketball - Brown/Black Size 6-28.5**WILSON**$32.59**4.5★65 rev](https://www.amazon.com/dp/B0FMS635GV) [2**WILSON NBA Authentic Series Basketball - Outdoor Size 6 - 28.5 Brown**WILSON**$27.00**4.6★3,317 rev](https://www.amazon.com/dp/B091MKBL9R) [3**WILSON NCAA Replica Basketball - Size 6-28.5**WILSON**$43.17**4.8★327 rev](https://www.amazon.com/dp/B0DF8VD894) [4**BALSMART Size 6 Basketball for Womens 28.5 Basketball for Indoor Outdoor Play**BALSMART**$17.25**4.5★203 rev](https://www.amazon.com/dp/B0G5N5J56Z) [5**WILSON NBA DRV Series Basketball - DRV Brown Size 6-28.5**WILSON**$12.88**4.6★10,838 rev](https://www.amazon.com/dp/B091MCXYLS)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**adidas Unisex-Adult All Court 3.0 Basketball Natural/Black 6**adidas**$23.18**312 rev1mo ago](https://www.amazon.com/dp/B09JX2M5SZ) [**BALSMART Size 6 Basketball for Womens 28.5 Basketball for Indoor Outdoor Play**BALSMART**$17.25**203 rev6mo ago](https://www.amazon.com/dp/B0G5N5J56Z) [**WILSON NCAA Verified Indoor/Outdoor Basketball - Brown/Black Size 6-28.5**WILSON**$32.59**65 rev8mo ago](https://www.amazon.com/dp/B0FMS635GV) [**WILSON Caitlin Clark Envision Basketball - Blue Size 6-28.5**WILSON**$27.21**105 rev1y ago](https://www.amazon.com/dp/B0DSY483Q1) [**WILSON Caitlin Clark Envision Basketball - Blue Size 5-27.5**WILSON**$27.76**58 rev1y ago](https://www.amazon.com/dp/B0DSXYSWKP)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**WILSON NCAA Verified Indoor/Outdoor Basketball - Brown/Black Size 6-28.5**WILSON**$32.59**4.5★**▲ 98%**](https://www.amazon.com/dp/B0FMS635GV) [**XEDGE Basketball 28.5 Size 6 Indoor Outdoor Leather Basketball Set (Orange Size 6)**XEDGE**$33.68**4.1★**▲ 78%**](https://www.amazon.com/dp/B0CZZYT9TM) [**BALSMART Size 6 Basketball for Womens 28.5 Basketball for Indoor Outdoor Play**BALSMART**$17.25**4.5★**▲ 74%**](https://www.amazon.com/dp/B0G5N5J56Z) [**WILSON Caitlin Clark Envision Basketball - Blue Size 5-27.5**WILSON**$27.76**4.8★**▲ 47%**](https://www.amazon.com/dp/B0DSXYSWKP) [**Spalding Street Outdoor Basketball 29.5**Spalding**$22.93**4.6★**▲ 34%**](https://www.amazon.com/dp/B08QJC5YPX)
**~~View all trending →~~**
## **What buyers say about 28.5 basketball indoor**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**25%
*“The quality is solid”*
**Value For Money**13%
*“Decent price”*
**Grip**8%
*“easy to grip”*
**Advertised Vs Actual Product**6%
*“Works great, just as advertised”*
**Size-Overall**6%
*“Good size and easy to pump up”*
**Color**5%
*“Great color”*
**Durability**4%
*“has held up well since purchasing/using”*
**Suitable For Indoor**4%
*“Its designed for indoor use”*
**Inflation/Deflation**3%
*“is fully pumped”*
**Fun/Entertainment Experience**3%
*“Fun”*
### **What buyers complain about **
**Inflation/Deflation**16%
*“Deflated”*
**Leak-Proof**10%
*“it also leaks at the valve”*
**Size-Overall**9%
*“Wrong size was sent”*
**Quality-Overall**9%
*“Extremely cheap feel and terrible quality”*
**Durability**8%
*“Ball got warped after a month of normal use”*
**Flatness**7%
*“Well after using this maybe four times it started going flat”*
**Grip**6%
*“Grip could be better”*
**Product Condition**4%
*“It came looking used with scuff marks”*
**Advertised Vs Actual Product**3%
*“Size in the description was inaccurate”*
**Noise Level**2%
*“cant always have the noise”*
### **Top return reasons **
**Size-Overall**38%
**Inflation/Deflation**9%
**Value For Money**7%
**Leak-Proof**6%
**Functionality-Overall**6%
**Advertised Vs Actual Product**5%
**Material Quality**5%
**Grip**5%
**Quality-Overall**3%
**Product Condition**2%
## **Common questions**
- **Is 28.5 basketball indoor profitable to sell on Amazon United States?**
- The niche generates $437K/yr across 44 tracked products. 5 of 9 products launched in the last 360 days are still selling. 90-day search growth is -19.9%. Flapen's verdict: Worth a look (55/100).
- **How competitive is the 28.5 basketball indoor niche?**
- 14 brands and 49 sellers compete. The top 5 products take 36% of clicks and top 5 brands hold 86% of demand.
- **What do buyers complain about in 28.5 basketball indoor?**
- Top complaints mined from reviews: Inflation/Deflation, Leak-Proof, Size-Overall. The return rate is 1.5%.
- **What does it cost to enter the 28.5 basketball indoor niche?**
- Listings span $12.88–$93.23; the average listing price is $30.15 (sweet spot $15–$100). The average incumbent carries 2,378 reviews — the moat a new listing must climb.
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