KDP categories · Top KDP authors
Betty G. Birney: Amazon KDP author data
As of Nov 6, 2026, Betty G. Birney has 38 books on Amazon, 25 of them on a best-seller list in the last 30 days (best rank #3), mostly in Mice, Hamsters, Guinea Pigs & Squirrels, Frogs & Toads, Multicultural.
| Median price | $7.99 |
|---|---|
| Price range (middle 50%) | $6.50 – $8.99 |
| Median reviews | 831 |
| Total reviews | 26,005 |
| New listings (30 days, incl. new editions) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- 66% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $7.99, 24% above the median of their main category, Mice, Hamsters, Guinea Pigs & Squirrels.
Betty G. Birney's best-ranked books
-
The World According to Humphrey
by Betty G. Birney
- Price$5.99
- Rating4.7
- Reviews2,922
- Published2005-05
-
The World According to Humphrey
by Betty G. Birney
- Price$6.10
- Rating4.7
- Reviews2,922
-
Friendship According to Humphrey
by Betty G. Birney
- Price$6.26
- Rating4.8
- Reviews1,410
- Published2006-07
-
Friendship According to Humphrey
by Betty G. Birney
- Price$5.99
- Rating4.8
- Reviews1,410
- Published2006-07
-
School Days According to Humphrey
by Betty G. Birney
- Price$6.80
- Rating4.8
- Reviews989
-
Life According to Og the Frog
by Betty G. Birney
- Price$8.99
- Rating4.8
- Reviews442
-
Exploring According to Og the Frog
by Betty G. Birney
- Price$8.99
- Rating4.8
- Reviews385
-
Summer According to Humphrey
by Betty G. Birney
- Price$3.99
- Rating4.8
- Reviews972
- Published2009-11
-
Life According to Og the Frog
by Betty G. Birney
- Price$6.93
- Rating4.8
- Reviews442
- Published2019-06
-
Surprises According to Humphrey
by Betty G. Birney
- Price$7.99
- Rating4.8
- Reviews976
Main categories
FAQ
How many books does Betty G. Birney have on Amazon?
KDPTop tracks 38 of their books; 25 made an Amazon list in the last 30 days.
Which categories does Betty G. Birney publish in?
Their books chart most often in Mice, Hamsters, Guinea Pigs & Squirrels, Frogs & Toads, Multicultural.
How does Betty G. Birney price their books?
The median price is $7.99; half of the books cost $6.50–$8.99.
Has Betty G. Birney released new books recently?
0 new books in the last 30 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.