KDP categories · Top KDP authors
KTZ KATZ: Amazon KDP author data
As of Nov 6, 2026, KTZ KATZ has 14 books on Amazon, 7 of them on a best-seller list in the last 30 days (best rank #11), mostly in Mechanical, Physics, Mechanics.
| Median price | $7.49 |
|---|---|
| Price range (middle 50%) | $6.99 – $10.75 |
| Median reviews | - |
| Total reviews | 0 |
| New listings (30 days, incl. new editions) | 7 |
| Breakout books (30 days) | 2 |
What stands out
- 50% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $7.49, 61% below the median of their main category, Mechanical.
- 7 new listings in the last 30 days (new editions included), 2 of them broke into a Best Sellers list.
KTZ KATZ's best-ranked books
-
Physics Free-Body Diagrams & Forces Workbook: 80 Progressive Drills with Guided Solutions for Physics I (Engineering Skills Workbooks Book 5)
by KTZ KATZ
- Price$6.99
- Reviews-
-
Physics Free-Body Diagrams & Forces Workbook: 80 Progressive Drills with Guided Solutions for Physics I (Engineering Skills Workbooks)
by KTZ KATZ
- Price$14.99
- Reviews-
- Published2026-09
-
Physics Refresher Workbook for College Students: A 30-Day Plan for Motion, Forces, Free-Body Diagrams, and Energy with 150 Practice Problems and Step-by-Step Solutions
by KTZ KATZ
- Price$5.99
- Reviews-
- Published2026-10
-
Bending & Shear Stress Workbook: Internal Resultants to Stress Fields. (Engineering Skills Workbooks)
by KTZ KATZ
- Price-
- Reviews-
- Published2026-09
-
Shear Force & Bending Moment Diagram Workbook: 100 Progressive Beam Problems to Master Reactions, Internal Forces, Distributed Loads, Sign Conventions ... Construction (Engineering Skills Workbooks)
by KTZ KATZ
- Price-
- Reviews-
- Published2026-09
-
Mechanical Vibrations Workbook for Engineering Students: 100 Progressive Drills to Master System Modeling, Natural Frequency, Damping, Forced Vibration, ... Isolation (Engineering Skills Workbooks 6)
by KTZ KATZ
- Price$6.99
- Reviews-
- Published2026-09
-
The Vesperglass Observatory: A True Escape Room in a Book
by KTZ KATZ
- Price$7.99
- Reviews-
-
Free-Body Diagram Workbook for Engineering Statics: 100 Progressive Drills to Master Forces, Supports, Reactions, Beams, Cables, Two-Force Members & Equation Setup (Engineering Skills Workbooks 1)
by KTZ KATZ
- Price$6.99
- Reviews-
-
Bending & Shear Stress: 100 Guided Mechanics of Materials Drills — Digital Study Edition (Engineering Skills Workbooks Book 4)
by KTZ KATZ
- Price$0
- Reviews-
- Published2026-09
-
Free-Body Diagram Workbook for Engineering Statics: 100 Progressive Drills to Master Forces, Supports, Reactions, Beams, Cables, Two-Force Members & Equation Setup (Engineering Skills Workbooks)
by KTZ KATZ
- Price$12.99
- Reviews-
Main categories
FAQ
How many books does KTZ KATZ have on Amazon?
KDPTop tracks 14 of their books; 7 made an Amazon list in the last 30 days.
Which categories does KTZ KATZ publish in?
Their books chart most often in Mechanical, Physics, Mechanics.
How does KTZ KATZ price their books?
The median price is $7.49; half of the books cost $6.99–$10.75.
Has KTZ KATZ released new books recently?
7 new books in the last 30 days, 2 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.