KDP categories · Top KDP authors
Vlad-Stefan CONSTANTINESCU: Amazon KDP author data
As of Nov 6, 2026, Vlad-Stefan CONSTANTINESCU has 9 books on Amazon, 5 of them on a best-seller list in the last 30 days (best rank #16), mostly in Study & Teaching, Matrices, Mathematics.
| Median price | $4.99 |
|---|---|
| Price range (middle 50%) | $4.99 – $4.99 |
| Median reviews | 1 |
| Total reviews | 7 |
| New books (30 days) | 4 |
| Breakout books (30 days) | 3 |
What stands out
- 56% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $4.99, 44% below the median of their main category, Study & Teaching.
- 4 new books in the last 30 days, 3 of them broke into a Best Sellers list.
Vlad-Stefan CONSTANTINESCU's best-ranked books
-
The Romanian Higher Algebra and Analysis Olympiad Volume 4: Abstract Algebra
by Vlad-Stefan CONSTANTINESCU
- Price$4.99
- Rating5.0
- Reviews1
-
The Romanian Higher Algebra and Analysis Olympiad Volume 3: Linear Algebra
by Vlad-Stefan CONSTANTINESCU
- Price$4.99
- Rating5.0
- Reviews1
-
The Romanian Higher Algebra and Analysis Olympiad Volume 1: Grade 11 Analysis
by Vlad-Stefan CONSTANTINESCU
- Price$4.99
- Rating5.0
- Reviews2
-
The Romanian Higher Algebra and Analysis Olympiad Volume 4: Abstract Algebra
by Vlad-Stefan CONSTANTINESCU
- Price$8.99
- Rating5.0
- Reviews2
-
The Romanian Higher Algebra and Analysis Olympiad Volume 2: Grade 12 Analysis
by Vlad-Stefan CONSTANTINESCU
- Price$4.49
- Rating5.0
- Reviews1
-
L’Olympiade roumaine d’algèbre et d’analyse supérieures Volume 2 : Analyse de douzième (French Edition)
by Vlad-Stefan CONSTANTINESCU
- Price$0
- Reviews-
- Published2026-09
-
L’Olympiade roumaine d’algèbre et d’analyse supérieures Volume 1 : Analyse de onzième (French Edition)
by Vlad-Stefan CONSTANTINESCU
- Price$0
- Reviews-
- Published2026-09
-
L’Olympiade roumaine d’algèbre et d’analyse supérieures Volume 4 : Algèbre abstraite (French Edition)
by Vlad-Stefan CONSTANTINESCU
- Price$0
- Reviews-
- Published2026-09
-
L’Olympiade roumaine d’algèbre et d’analyse supérieures Volume 3 : Algèbre linéaire (French Edition)
by Vlad-Stefan CONSTANTINESCU
- Price$0
- Reviews-
- Published2026-09
Main categories
FAQ
How many books does Vlad-Stefan CONSTANTINESCU have on Amazon?
KDPTop tracks 9 of their books; 5 made an Amazon list in the last 30 days.
Which categories does Vlad-Stefan CONSTANTINESCU publish in?
Their books chart most often in Study & Teaching, Matrices, Mathematics.
How does Vlad-Stefan CONSTANTINESCU price their books?
The median price is $4.99; half of the books cost $4.99–$4.99.
Has Vlad-Stefan CONSTANTINESCU released new books recently?
4 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.