Sti Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
Sti sales on Amazon US totaled 12,800 units in July 2026 (▼ 0.8% vs. the prior month), generating an estimated $322,873 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 98.8% of unit volume and 97.3% of revenue, while a typical listing is priced at $52.41. The keyword itself pulled 31,850 Amazon queries over the same period (▲ 8.8% MoM).
Zooming out to the 12-month window ending July 2026, the sti Top 50 moved 145,900 units and $3,644,067 in cumulative sales — an average of 12,158 units and $303,672 per month. Monthly throughput topped out at 12,900 units in June 2026 and dipped to 9,650 in May 2026, leaving the latest reading 8.0% higher than August 2025.
Sti 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
12.8K
▼ 0.8% MoM
Monthly Revenue 2026/07
$322.9K
▲ 2.0% MoM
Top 10 Market Share 2026/07
98.8%
Sti Market Share & Sales Concentration on Amazon US — July 2026
The most-sold sti listing on Amazon US in July 2026 is ASIN B0946VTR1Y (Brand: TROJAN), which sold 10,000 units at $19.99 apiece — equal to 78.1% of every unit tracked in this report and 10.0× the volume of the No. 2 listing.
The Top 10 ASINs account for 12,650 units and $314,284 in July 2026 — 98.8% of unit volume and 97.3% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'Sti' on Amazon
July 2026
![Matchbox 2024 Subaru WRX S4 STI [Blue] 31/125, 1:64 Scale Diecast Toy Vehicle (ASIN B0GFXFT91Q), rank #5 by monthly sales volume for 'Sti' on Amazon](https://m.media-amazon.com/images/I/51yCQ1ImZgL._AC_UY512_.jpg)
Is 98.8% Top 10 share highly concentrated?
Ask AI to evaluate competition, market structure, and entry opportunities using ’s tracked Amazon sales, ranking, and keyword data.
Powered by ASINSIGHT MCP · Grounded in ASINSIGHT Amazon data
Top 5 Volume Share breakdown
B0946VTR1Y
TROJAN Raw Thin Latex Condoms for Men, 24 Count | America's Thinnest Latex Condoms, Lubricated, Premium Latex, Helps Reduce Risk of Pregnancy and STIs
10K
▲ 0.0%vs. prior month
$200K
latest month
12-month trend
B0D7Z1C2GC
Puroma Cabin Air Filter Activated Carbon for CP930 CF10930 CAF1869P Subaru | For Crosstrek Forester Impreza WRX 72880-FG000, Easy Install, Odor Removal, High Airflow Capacity, Long-lasting, Multi-layer
1K
▲ 0.0%vs. prior month
$9.8K
latest month
12-month trend
B0D3J75YMP
STD Hero At-Home Common STD Test Kit for Women and Men - Test for the Top Four STD's - Includes MGen - Private At-Home Collection - Simple, Discreet, Easy-to-Use with Fast Online Results
800
▼ 11.1%vs. prior month
$54.2K
latest month
12-month trend
B0006AZDII
Safety Technology International, Inc. STI-6400 Exit Stopper Multifunction Door Alarm, Helps Prevent Unauthorized Exits or Entries Through Emergency Doors
400
▲ 0.0%vs. prior month
$30.5K
latest month
12-month trend
B0GFXFT91Q
Matchbox 2024 Subaru WRX S4 STI [Blue] 31/125, 1:64 Scale Diecast Toy Vehicle
100
▲ 0.0%vs. prior month
$672
latest month
12-month trend
B00PV6F8I2
Subaru Genuine Tweeter Kit Kicker WRX STi Forester Crosstrek Impreza H631SFJ101
100
▲ 0.0%vs. prior month
$10.2K
latest month
12-month trend
Unlock to view all Top 50 ASIN competitors and their sales contributions
Best Sti Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
TROJAN is the best-performing sti brand in July 2026, moving 10,000 units across 1 ASIN for 79.1% of Top 10 volume. Puroma follows with 1,000 units (7.9%), ahead of Better Life Science on 800 units (6.3%).
With 7 brands splitting the Top 10 and 93.3% 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 $9.85 to $61.20, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
TROJAN
1 ASIN in Top 10
79.1%
Units
10K
Revenue
$200K
Avg. price
$19.99
B0946VTR1Y
$19.99·★4.5·5.1K revsTROJAN Raw Thin Latex Condoms for Men, 24 Count | America's Thinnest Latex Condoms, Lubricated, Premium Latex, Helps Reduce Risk of Pregnancy and STIs
Units sold10K
Puroma
1 ASIN in Top 10
7.9%
Units
1K
Revenue
$9.8K
Avg. price
$9.85
B0D7Z1C2GC
$9.85·★4.5·285 revsPuroma Cabin Air Filter Activated Carbon for CP930 CF10930 CAF1869P Subaru | For Crosstrek Forester Impreza WRX 72880-FG000, Easy Install, Odor Removal, High Airflow Capacity, Long-lasting, Multi-layer
Units sold1K
Better Life Science
1 ASIN in Top 10
6.3%
Units
800
Revenue
$54.2K
Avg. price
$61.20
B0D3J75YMP
$61.20·★4.3·165 revsSTD Hero At-Home Common STD Test Kit for Women and Men - Test for the Top Four STD's - Includes MGen - Private At-Home Collection - Simple, Discreet, Easy-to-Use with Fast Online Results
Units sold800
One Amazon dataset. Two ways to use it.
Every number in this sti report comes from the Amazon market data ASINSIGHT tracks. Pick how you want to work with it.
Explore the full data
Browse the complete, structured picture in a ready-made interface — and keep tracking it as the market moves.
- Organic vs. ad traffic shifts per product
- Hourly rank and search-volume tracking
- Competitor ASINs and historical trends
Starts with a free ASINSIGHT account
Analyze the data your way
Connect the same data to ChatGPT, Claude or Cursor, then combine any dimensions to answer your own questions.
- Combine product, keyword, sales & ranking data freely
- Follow up in your own words, no fixed reports
- Works in ChatGPT, Claude & Cursor
20,000 credits/mo free, no credit card