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Keystone Press: Amazon KDP author data
As of Nov 6, 2026, Keystone Press has 15 books on Amazon, 8 of them on a best-seller list in the last 30 days (best rank #70), mostly in Algebra, Mathematics, Workbooks.
| Median price | $7.99 |
|---|---|
| Price range (middle 50%) | $7.99 – $12.99 |
| Median reviews | - |
| Total reviews | 0 |
| New books (30 days) | 6 |
| Breakout books (30 days) | 1 |
What stands out
- 53% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $7.99, 35% below the median of their main category, Algebra.
- 6 new books in the last 30 days, 1 of them broke into a Best Sellers list.
Keystone Press's best-ranked books
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Math Workbook Word Problems: Grade 8 Word Problems (Grade 8 Pre-Algebra, Algebra 1, Geometry, SAT Math)
by Keystone Press
- Price$7.99
- Reviews-
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3rd Grade Math Word Problems Workbook: Common Core Practice with Complete Answer Key — Multiplication, Division, Fractions & Measurement (Ages 8–9) (Grades 3–7 Word Problems)
by Keystone Press
- Price$7.99
- Reviews-
- Published2026-08
-
Math Workbook Word Problems: Grade 8 (Grade 8 Pre-Algebra, Algebra 1, Geometry, SAT Math)
by Keystone Press
- Price$14.99
- Reviews-
-
Math Word Problems Workbook :Grade 6 (Grades 3–7 Word Problems)
by Keystone Press
- Price$12.99
- Reviews-
-
8th Grade Pre-Algebra Workbook: Common Core Math Practice with Complete Step-by-Step Solutions | Equations, Functions, Slope, Systems, Exponents & ... Pre-Algebra, Algebra 1, Geometry, SAT Math)
by Keystone Press
- Price$7.99
- Reviews-
-
Number Tracing Notebook: 8.5" x 11" Basic or First Notebook for Youngsters 4-6 Years Old.
by Keystone Press
- Price-
- Reviews-
-
-
Math Workbook Word Problems: Grade 4 (Grades 3–7 Word Problems)
by Keystone Press
- Price$7.99
- Reviews-
-
My Letters & Numbers Tracing Workbook:: 8.5" x 11" Early Learning for Pre-school, Kindergarten, Home Schooling, and Kids 4-6 Years Old.
by Keystone Press
- Price-
- Reviews-
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Algebra 1 Workbook: Common Core Practice with Complete Step-by-Step Solutions | Equations, Inequalities, Functions, Systems, Factoring & Quadratics ... Pre-Algebra, Algebra 1, Geometry, SAT Math)
by Keystone Press
- Price$7.99
- Reviews-
Main categories
FAQ
How many books does Keystone Press have on Amazon?
KDPTop tracks 15 of their books; 8 made an Amazon list in the last 30 days.
Which categories does Keystone Press publish in?
Their books chart most often in Algebra, Mathematics, Workbooks.
How does Keystone Press price their books?
The median price is $7.99; half of the books cost $7.99–$12.99.
Has Keystone Press released new books recently?
6 new books in the last 30 days, 1 of which reached a Best Sellers list.
About this data
Data comes from KDPTop's daily crawl of Amazon's public Best Sellers pages; medians use the latest list. The opportunity score (0–100, higher is easier to enter) combines the review barrier, the share of low-review books, list turnover, new-release share and price.