Index Cards Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
Index Cards sales on Amazon US totaled 138,900 units in July 2026 (▲ 64.3% vs. the prior month), generating an estimated $926,241 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 68.4% of unit volume and 60.6% of revenue, while a typical listing is priced at $8.22. The keyword itself pulled 508,855 Amazon queries over the same period (▲ 139.6% MoM).
Zooming out to the 12-month window ending July 2026, the index cards Top 50 moved 1,291,900 units and $9,052,004 in cumulative sales — an average of 107,658 units and $754,334 per month. Monthly throughput topped out at 267,150 units in August 2025 and dipped to 44,450 in May 2026, leaving the latest reading 48.0% lower than August 2025.
Index Cards 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
138.9K
▲ 64.3% MoM
Monthly Revenue 2026/07
$926.2K
▲ 52.9% MoM
Top 10 Market Share 2026/07
68.4%
Index Cards Market Share & Sales Concentration on Amazon US — July 2026
The most-sold index cards listing on Amazon US in July 2026 is ASIN B077K8JVW4 (Brand: Amazon Basics), which sold 30,000 units at $4.88 apiece — equal to 21.6% of every unit tracked in this report and 3.0× the volume of the No. 2 listing.
The Top 10 ASINs account for 95,000 units and $561,130 in July 2026 — 68.4% of unit volume and 60.6% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'Index Cards' on Amazon
July 2026
Is 68.4% 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
B077K8JVW4
Amazon Basics Heavy Weight Ruled Index Cards for Studying and Note Taking, White, 3" x 5", 300 Count (Pack of 3)
30K
▲ 50.0%vs. prior month
$149.7K
latest month
12-month trend
B00INBSU14
Oxford Heavyweight Ruled Index Cards, 3" x 5", White, 100 Per Pack (63500)
10K
▲ 400.0%vs. prior month
$39.1K
latest month
12-month trend
B00FX4VAES
Oxford Ruled Index Cards, 3" x 5", White, Lined Index Flashcards, 300 per Pack (10022) | Three banded bundles of white cards, lined on the front and blank on the back, so one card holds a question and its answer.
10K
▲ 66.7%vs. prior month
$49.2K
latest month
12-month trend
B0DZ5WN6QX
250 Count Colored Index Cards 3x5 Inch with Key Ring, 180gsm Heavy Weight Flash Cards 5 Color (50 Sheets Each) Portable Note Taking for Students, Teachers, Study Note Cards for Office School Supplies
10K
▲ 25.0%vs. prior month
$68.5K
latest month
12-month trend
B0DSKTZBB6
300 Count Colored Index Cards 3 x 5 Inch Ruled Index Cards, Flash Cards College Ruled for Office School Supplies and Home Organization, Durable Study To Do List Note Cards with Ruled Lines
9K
▲ 28.6%vs. prior month
$61.9K
latest month
12-month trend
B00V5DQJWY
Amazon Basics Ruled Lined Index Cards for Study, Notes and Recipes, White, 3" x 5", 1,000 Count (10 Pack of 100)
7K
▲ 133.3%vs. prior month
$55.1K
latest month
12-month trend
Unlock to view all Top 50 ASIN competitors and their sales contributions
Best Index Cards Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
Amazon Basics is the best-performing index cards brand in July 2026, moving 47,000 units across 4 ASINs for 49.5% of Top 10 volume. Oxford follows with 26,000 units (27.4%), ahead of AILZFEI on 10,000 units (10.5%).
With 5 brands splitting the Top 10 and 87.4% 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 $2.85 to $7.26, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
Amazon Basics
4 ASINs in Top 10
49.5%
Units
47K
Revenue
$278.5K
Avg. price
$7.26
B077K8JVW4
$4.88·★4.7·32.5K revsAmazon Basics Heavy Weight Ruled Index Cards for Studying and Note Taking, White, 3" x 5", 300 Count (Pack of 3)
Units sold30KB00V5DQJWY
$8.50·★4.7·32.5K revsAmazon Basics Ruled Lined Index Cards for Study, Notes and Recipes, White, 3" x 5", 1,000 Count (10 Pack of 100)
Units sold7KB06XT1H3TN
$8.48·★4.7·32.5K revsAmazon Basics Ruled Lined Index Cards for Notes, Studying, Flash Cards, White, 4" x 6", 500 Count (5 Packs of 100)
Units sold5KB07X5CSNVH
$7.20·★4.7·32.5K revsAmazon Basics Blank Index Cards for Studying and Note Taking, White, 3" x 5", 1000 Count (10 Pack of 100), 7.5 pt. Paper Weight
Units sold5K
Oxford
3 ASINs in Top 10
27.4%
Units
26K
Revenue
$132K
Avg. price
$2.85
B00INBSU14
$1.49·★4.8·8.1K revsOxford Heavyweight Ruled Index Cards, 3" x 5", White, 100 Per Pack (63500)
Units sold10KB00FX4VAES
$2.29·★4.7·16.5K revsOxford Ruled Index Cards, 3" x 5", White, Lined Index Flashcards, 300 per Pack (10022) | Three banded bundles of white cards, lined on the front and blank on the back, so one card holds a question and its answer.
Units sold10KB09JYQZQ3V
$4.78·★4.7·4.1K revsOxford Index Cards, 3 x 5 Inches, White, Lined on Front, Blank on Back, Flashcards for School and Studying, Recipe Note Cards, 500 Count (5 Packs of 100) (40176)
Units sold6K
AILZFEI
1 ASIN in Top 10
10.5%
Units
10K
Revenue
$68.5K
Avg. price
$6.99
B0DZ5WN6QX
$6.99·★4.8·818 revs250 Count Colored Index Cards 3x5 Inch with Key Ring, 180gsm Heavy Weight Flash Cards 5 Color (50 Sheets Each) Portable Note Taking for Students, Teachers, Study Note Cards for Office School Supplies
Units sold10K
Trending Index Cards 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, 2 ASINs forced its way in: B06XT1H3TN booked 5K units at $8.48, with ▲ 150.0% MoM change. On the growth side, B00006IFDV leads positive momentum with ▲ 700.0% MoM growth on 400 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.
B06XT1H3TN
Amazon Basics Ruled Lined Index Cards for Notes, Studying, Flash Cards, White, 4" x 6", 500 Count (5 Packs of 100)
Price
$8.48
Rating
4.7
Reviews
32.5K
Latest month sales
B0CT8ZBYPM
Colored Index Cards 3x5, 200 Count, 180gsm Heavy Flash Cards for Studying | YIZUUN Ruled Index Cards, Heavy Note Cards for Office, College, Home Organization, 4 Color (50 Sheets Each)
Price
$6.98
Rating
4.8
Reviews
1.2K
Latest month sales
B00006IFDV
Oxford Ruled Color Index Cards, 3" x 5", Canary, 100 Per Pack (7321 CAN)
Unlock to view ASIN details and product titles
Price
$4.84
Rating
4.8
Reviews
529
Latest month sales
One Amazon dataset. Two ways to use it.
Every number in this index cards 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