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Fluid Dynamics (Dynamics, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Fluid Dynamics (Dynamics, Kindle eBooks), updated Nov 2, 2026: median price $33.81, median 7 reviews, average rating 4.4 and a KDPTop opportunity score of 32/100 (highly competitive).
| Price range (middle 50%) | $9.42 – $71.94 |
|---|---|
| Average rating | 4.4 |
| New releases (90 days) | 13% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- At $33.81 its median price beats 99% of Kindle eBooks categories, leaving more margin per copy.
- Its median reviews are 23% of the parent category Dynamics (30), one of the easier corners under it.
- Its review barrier is lower than in 85% of Kindle eBooks categories: the median best seller has only 7 reviews, so new books can chart with few.
Top 10 Fluid Dynamics best sellers
-
Scientific American September 2026
- List rank#1
- Price$6.99
- Rating4.8
- Reviews13
-
Scientific American October 2026
- List rank#2
- Price$6.99
- Rating4.2
- Reviews7
-
Scientific American June 2026
- List rank#3
- Price$6.99
- Rating4.4
- Reviews42
-
Scientific American November 2026
- List rank#4
- Price$6.99
- Reviews-
-
Scientific American May 2026
- List rank#5
- Price$6.99
- Rating4.0
- Reviews1
-
Scientific American July/August 2026
- List rank#6
- Price$6.99
- Rating4.7
- Reviews8
-
Scientific American 18th November 2025
- List rank#7
- Price$6.99
- Reviews-
-
Scientific American 16th December 2025
- List rank#8
- Price$6.99
- Rating4.5
- Reviews2
-
Scientific American 20th January 2026
- List rank#9
- Price$6.99
- Rating4.6
- Reviews3
-
Scientific American April 2026
- List rank#10
- Price$6.99
- Rating5.0
- Reviews3
Same niche in Books: Fluid Dynamics
FAQ
Is Fluid Dynamics a good niche for Amazon KDP?
Its KDPTop opportunity score is 32/100, which makes it highly competitive. The median best seller has 7 reviews and sells for $33.81.
How many reviews do you need to rank in Fluid Dynamics?
The median best seller has 7 reviews, and 94% of them have fewer than 100.
What do Fluid Dynamics best sellers cost?
The median price is $33.81; half of the best sellers are priced between $9.42 and $71.94.
Can new books break into Fluid Dynamics?
13% of the current best sellers were released in the last 90 days.
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.