S4 Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
S4 sales on Amazon US totaled 4,850 units in July 2026 (▼ 34.5% vs. the prior month), generating an estimated $490,455 in revenue across the 50 top-ranked ASINs for this search term. Demand is heavily concentrated at the top of the ranking — the ten best performers capture 97.9% of unit volume and 91.3% of revenue, while a typical listing is priced at $100.89. The keyword itself pulled 59,830 Amazon queries over the same period (▲ 120.4% MoM).
Zooming out to the 12-month window ending July 2026, the s4 Top 50 moved 46,400 units and $5,343,170 in cumulative sales — an average of 3,867 units and $445,264 per month. Monthly throughput topped out at 7,400 units in June 2026 and dipped to 2,050 in May 2026, leaving the latest reading 32.9% higher than August 2025.
S4 Sales Trend (Trailing 12 Months)
Based on the top 50 ASINs by monthly sales for this keyword
2025/08
2025/09
2025/10
2025/11
2025/12
2026/01
2026/02
2026/03
2026/04
2026/05
2026/06
2026/07
Monthly Sales 2026/07
4.8K
▼ 34.5% MoM
Monthly Revenue 2026/07
$490.5K
▼ 64.6% MoM
Top 10 Market Share 2026/07
97.9%
S4 Market Share & Sales Concentration on Amazon US — July 2026
The most-sold s4 listing on Amazon US in July 2026 is ASIN B084GTH5LL (Brand: TP-Link), which sold 2,000 units at $95.97 apiece — equal to 41.2% of every unit tracked in this report and 2.0× the volume of the No. 2 listing.
The Top 10 ASINs account for 4,750 units and $447,971 in July 2026 — 97.9% of unit volume and 91.3% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'S4' on Amazon
July 2026
Is 97.9% Top 10 share highly concentrated?
Ask AI to evaluate competition, market structure, and entry opportunities using ’s tracked Amazon sales, ranking, and keyword data.
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Top 5 Volume Share breakdown
B084GTH5LL
TP-Link Deco S4 Mesh AC1900 WiFi System, Deco S4(3-Pack) | Up to 5,500 Sq.ft. Coverage, Replaces WiFi Router and Extender, Gigabit Ports, Works with Alexa
2K
▲ 0.0%vs. prior month
$198.3K
latest month
12-month trend
B0FS13KN8T
ETENWOLF S4 Paddle Board Pump, 20 PSI High Pressure 12V DC Sup Air Pump | with Auto-Off & Deflation, Faster Portable Electric Pump for Stand Up Paddle Boards, Kayaks, Air Mattress, Tent, Inflatables
1K
▲ 0.0%vs. prior month
$40.6K
latest month
12-month trend
B0BVQC5P6W
roborock Side Brushes Replacement (2 Pieces) for S8 Pro Ultra, S7 Max Ultra, Qrevo, Roborock Qrevo Slim, Series of S7 MaxV/S7/Q7Max/Q8 Max/S8/Q7/Q5/S6/S5/S4/E5/E4/E3/E2 Robot Vacuum Cleaner, Black
600
▲ 0.0%vs. prior month
$9.6K
latest month
12-month trend
B0FH31CZSH
eufy Security eufyCam S4, 4K Solar Camera, 3-Lens PTZ, 360° Coverage | 8X Auto Zoom, AI Recognition & Tracking, Color Night Vision, No Monthly Fee, Built-in 32GB Storage
500
▼ 83.3%vs. prior month
$175K
latest month
12-month trend
B0BB1K77MM
Roborock Robot Vacuum Replacement Parts for Roborock S6 Pure S6 E4 S4 Max S6 MaxV S5 S5 Max S4 E2 E3 E5 E20 E25 E35 S50 S65 Xiaomi Mijia Robot Vacuum, 3 Main Brushes, 4 Filters, 6 Side Brushes
300
▲ 50.0%vs. prior month
$6K
latest month
12-month trend
B08B11K7NF
LOVECO Replacement Parts for Roborock S4 E4 S5 S6 S50 S51 S55 E20 E25 E35 | Replacement Accessories Kit Fit for Roborock, 2 Main Brush, 4 Filter, 4 Rubber Side Brush, 2 Cleaning Tool
100
▲ 0.0%vs. prior month
$1.9K
latest month
12-month trend
Unlock to view all Top 50 ASIN competitors and their sales contributions
Best S4 Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
TP-Link is the best-performing s4 brand in July 2026, moving 2,000 units across 1 ASIN for 42.1% of Top 10 volume. ETENWOLF follows with 1,000 units (21.1%), ahead of roborock on 600 units (12.6%).
With 9 brands splitting the Top 10 and 75.8% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $15.99 to $95.97, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
TP-Link
1 ASIN in Top 10
42.1%
Units
2K
Revenue
$198.3K
Avg. price
$95.97
B084GTH5LL
$95.97·★4.5·29.5K revsTP-Link Deco S4 Mesh AC1900 WiFi System, Deco S4(3-Pack) | Up to 5,500 Sq.ft. Coverage, Replaces WiFi Router and Extender, Gigabit Ports, Works with Alexa
Units sold2K
ETENWOLF
1 ASIN in Top 10
21.1%
Units
1K
Revenue
$40.6K
Avg. price
$29.99
B0FS13KN8T
$29.99·★3.1·125 revsETENWOLF S4 Paddle Board Pump, 20 PSI High Pressure 12V DC Sup Air Pump | with Auto-Off & Deflation, Faster Portable Electric Pump for Stand Up Paddle Boards, Kayaks, Air Mattress, Tent, Inflatables
Units sold1K
roborock
1 ASIN in Top 10
12.6%
Units
600
Revenue
$9.6K
Avg. price
$15.99
B0BVQC5P6W
$15.99·★4.7·855 revsroborock Side Brushes Replacement (2 Pieces) for S8 Pro Ultra, S7 Max Ultra, Qrevo, Roborock Qrevo Slim, Series of S7 MaxV/S7/Q7Max/Q8 Max/S8/Q7/Q5/S6/S5/S4/E5/E4/E3/E2 Robot Vacuum Cleaner, Black
Units sold600
Trending S4 Products — Growth Leaders & New Top 10 Entrants
Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. Specifically, one ASIN forced its way in: B07L1GRYN4 booked 50 units at $39.99, with ▲ 0.0% MoM change. On the growth side, B0BB1K77MM leads positive momentum with ▲ 50.0% MoM growth on 300 units.
The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.
B07L1GRYN4
TOZO AMOLED S4 Smart Watch 1.78" Ultra-Clear Screen for Men Women | Bluetooth Call Answer Fitness Tracker, Sleep Monitor IP68 Waterproof for iOS 11.0+ Android 9.0+ Black
Price
$39.99
Rating
3.9
Reviews
598
Latest month sales
B0BB1K77MM
Roborock Robot Vacuum Replacement Parts for Roborock S6 Pure S6 E4 S4 Max S6 MaxV S5 S5 Max S4 E2 E3 E5 E20 E25 E35 S50 S65 Xiaomi Mijia Robot Vacuum, 3 Main Brushes, 4 Filters, 6 Side Brushes
Price
$19.99
Rating
4.3
Reviews
1.1K
Latest month sales
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