KDP categories · Top KDP authors
M J Markgraf: Amazon KDP author data
As of Nov 6, 2026, M J Markgraf has 17 books on Amazon, 7 of them on a best-seller list in the last 30 days (best rank #28), mostly in Androids, Robots & Artificial Intelligences, Space Opera, Adventure.
| Median price | $7.99 |
|---|---|
| Price range (middle 50%) | $6.99 – $19.99 |
| Median reviews | 713 |
| Total reviews | 10,334 |
| New books (30 days) | 3 |
| Breakout books (30 days) | 3 |
What stands out
- Median price $7.99, 60% above the median of their main category, Androids, Robots & Artificial Intelligences.
- 3 new books in the last 30 days, 3 of them broke into a Best Sellers list.
M J Markgraf's best-ranked books
-
Severed Stars: A Space Opera Adventure (Blue Star Enterprises Book 5)
by M J Markgraf
- Price$6.99
- Rating4.7
- Reviews405
- Published2026-09
-
Sol's Verdict: A Space Opera Adventure (Blue Star Enterprises Book 4)
by M J Markgraf
- Price$6.99
- Rating4.8
- Reviews715
-
Blueprints for Tomorrow: A Space Opera Adventure (Blue Star Enterprises Book 1)
by M J Markgraf
- Price$4.99
- Rating4.6
- Reviews1,351
-
Sol's Verdict: A Space Opera Adventure: Blue Star Enterprises, Book 4
by M J Markgraf
- Price$21.09
- Rating4.8
- Reviews715
-
Eden's End: A Space Opera Adventure (Blue Star Enterprises Book 2)
by M J Markgraf
- Price$5.99
- Rating4.7
- Reviews796
-
Forged Unity: A Space Opera Adventure (Blue Star Enterprises Book 3)
by M J Markgraf
- Price$6.99
- Rating4.7
- Reviews845
-
Empire's Fall: A Space Opera Adventure (Blue Star Enterprises Book 6)
by M J Markgraf
- Price$7.99
- Reviews-
- Published2027-02
-
Blueprints for Tomorrow: A Space Opera Adventure (Blue Star Enterprises)
by M J Markgraf
- Price$19.99
- Rating4.6
- Reviews1,351
- Published2026-01
-
Blueprints for Tomorrow: A Space Opera Adventure: Blue Star Enterprises, Book 1
by M J Markgraf
- Price$0.99
- Rating4.6
- Reviews1,345
- Published2025-11
-
Forged Unity: A Space Opera Adventure (Blue Star Enterprises)
by M J Markgraf
- Price$19.99
- Rating4.7
- Reviews845
- Published2026-03
Main categories
FAQ
How many books does M J Markgraf have on Amazon?
KDPTop tracks 17 of their books; 7 made an Amazon list in the last 30 days.
Which categories does M J Markgraf publish in?
Their books chart most often in Androids, Robots & Artificial Intelligences, Space Opera, Adventure.
How does M J Markgraf price their books?
The median price is $7.99; half of the books cost $6.99–$19.99.
Has M J Markgraf released new books recently?
3 new books in the last 30 days, 3 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.