KDP categories · Top KDP authors
Jan Spiller: Amazon KDP author data
As of Nov 6, 2026, Jan Spiller has 6 books on Amazon, 6 of them on a best-seller list in the last 30 days (best rank #5), mostly in Reference, Astrology, Occult & Paranormal.
| Median price | $12.49 |
|---|---|
| Price range (middle 50%) | $11.84 – $14.33 |
| Median reviews | 478 |
| Total reviews | 6,220 |
| New books (30 days) | 2 |
| Breakout books (30 days) | 2 |
What stands out
- 100% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $12.49, 22% below the median of their main category, Reference.
Jan Spiller's best-ranked books
-
Astrology for the Soul
by Jan Spiller
- Price$11.79
- Rating4.7
- Reviews2,626
-
Astrology for the Soul (Bantam Classics)
by Jan Spiller
- Price$9.99
- Rating4.7
- Reviews2,626
-
New Moon Astrology: The Secret of Astrological Timing to Revitalize Your Life
by Jan Spiller
- Price$11.99
- Rating4.8
- Reviews478
-
New Moon Astrology: The Secret of Astrological Timing to Make All Your Dreams Come True
by Jan Spiller
- Price$14.78
- Rating4.8
- Reviews478
-
Awakening Your Soul’s Purpose: North Node Astrology Through the Houses
by Jan Spiller
- Price$12.99
- Rating5.0
- Reviews6
-
Awakening Your Soul’s Purpose: North Node Astrology Through the Houses
by Jan Spiller
- Price$33
- Rating5.0
- Reviews6
Main categories
FAQ
How many books does Jan Spiller have on Amazon?
KDPTop tracks 6 of their books; 6 made an Amazon list in the last 30 days.
Which categories does Jan Spiller publish in?
Their books chart most often in Reference, Astrology, Occult & Paranormal.
How does Jan Spiller price their books?
The median price is $12.49; half of the books cost $11.84–$14.33.
Has Jan Spiller released new books recently?
2 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.