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William S Harris: Amazon KDP author data
As of Nov 6, 2026, William S Harris has 41 books on Amazon, 25 of them on a best-seller list in the last 30 days (best rank #38), mostly in Test Preparation, Study & Test-Taking Skills, Study Aids.
| Median price | $21.99 |
|---|---|
| Price range (middle 50%) | $21.99 – $31.99 |
| Median reviews | 4 |
| Total reviews | 199 |
| New books (30 days) | 9 |
| Breakout books (30 days) | 6 |
What stands out
- 61% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $21.99, 49% above the median of their main category, Test Preparation.
- 9 new books in the last 30 days, 6 of them broke into a Best Sellers list.
William S Harris's best-ranked books
-
Florida FAST Test Prep Grade 3: Reading, Early Literacy and Mathematics: A 4-in-1 Workbook with Full-Length Tests Aligned to B.E.S.T. Standards and Skill-Focused Math Practice
by William S Harris
- Price$39.57
- Rating5.0
- Reviews22
-
Florida FAST Test Prep Grade 3 ELA: 2-in-1 Reading and Early Literacy Practice Workbook with Full-Length Tests Aligned to B.E.S.T. Standards
by William S Harris
- Price$21.99
- Rating5.0
- Reviews10
-
Florida FAST Test Prep Grade 4 Reading: Full-Length Practice Tests Aligned to B.E.S.T. Standards
by William S Harris
- Price$21.99
- Rating5.0
- Reviews1
-
Florida FAST Test Prep Grade 5 ELA: Reading and Writing Practice Workbook with Full-Length Tests Aligned to B.E.S.T. Standards
by William S Harris
- Price$21.99
- Rating5.0
- Reviews6
-
Florida FAST Test Prep Grade 2 Star Reading: Full-Length Practice Tests with Detailed Answer Explanations and Aligned to B.E.S.T. Standards
by William S Harris
- Price$21.99
- Rating5.0
- Reviews1
- Published2026-04
-
Florida FAST Test Prep Grade 5 Skill-Focused Mathematics: Topic-by-Topic Practice Workbook Covering All Skills Tested, Aligned to B.E.S.T. Standards
by William S Harris
- Price$19.99
- Rating5.0
- Reviews2
-
Florida FAST Test Prep Grade 6 ELA: Reading Practice Workbook with Full-Length Tests Aligned to B.E.S.T. Standards
by William S Harris
- Price$21.99
- Rating5.0
- Reviews1
- Published2026-06
-
Florida FAST Test Prep Grade 4 Mathematics: Practice Workbook with Full-Length Tests Aligned to B.E.S.T. Standards
by William S Harris
- Price$21.99
- Rating5.0
- Reviews6
- Published2026-01
-
Florida Science Test Prep Grade 5: Practice Workbook with Full-Length Practice Tests for the Statewide Science Assessment (SSA)
by William S Harris
- Price$21.99
- Rating5.0
- Reviews2
- Published2026-09
-
Florida FAST Test Prep Grade 3: Reading, Early Literacy and Mathematics - A 3-in-1 Workbook with Full-Length Tests Aligned to B.E.S.T. Standards
by William S Harris
- Price$32.99
- Rating5.0
- Reviews11
- Published2026-01
Main categories
FAQ
How many books does William S Harris have on Amazon?
KDPTop tracks 41 of their books; 25 made an Amazon list in the last 30 days.
Which categories does William S Harris publish in?
Their books chart most often in Test Preparation, Study & Test-Taking Skills, Study Aids.
How does William S Harris price their books?
The median price is $21.99; half of the books cost $21.99–$31.99.
Has William S Harris released new books recently?
9 new books in the last 30 days, 6 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.