People often ask me why "X" book isn't out yet. Sometimes, the answer is simply because it is being worked on. Other times, the answer is because "I'm not feeling it", and then there is the business answer - the series isn't making enough to sustain me taking time on another release.
Things that would change the order when I take a closer look are:
Highest Grossing to worst
If a book was free for a long time (Shadows of the Ancients and Birthrights are examples)
Book prices ($0.99 vs 3.99)
Royalty % (some royalties are 35% others are up to 70%)
Time in publication (if the gross is weak after years vs if it looks lower because the book has only been out a month or two)
Beginning books in a series that spent a long time at $0.99 (35% royalty) and special books at same price (Dancing with Danger, Angel Girl, The Infinite Something, A Year and a Day, Proven, Smoke and the Flame are examples)
I have 57 titles total published under my names. There are 49 books in the list (two sets of tied books at #7 and #24) and eight titles not included in this lineup because they are out of circulation for good.
HIGHEST GROSSING BOOKS TO WORST (Year of publication is next to each book along with series info.)
The Other Princess (Aces High MC - Charleston Book 1 - 2019)
Falling into the White (The Ancients Series Book 2 - 2013)
Revelations (The Awakening Trilogy Book 2 - 2011-2016, currently out of circulation)
Redemption Weather (Aces High MC - Cedar Falls Book 1- 2019)
The Princess and the Prospect (Aces High MC - Charleston Book 3 - 2019)
A Love so Hard (Aces High MC - Charleston Book 4 - 2019)
JoJo (S.H.E. MC Book 2 - 2019). TIED WITH The Killing Ride (Aces High MC - Charleston Book 4 - 2019)
Incarnations (The Awakening Trilogy Book 3 - 2011-2016)
Whiskey Tango Foxtrot (Aces High MC - Dakotas 2019)
Branches of the Willow (The Ancients Series Book 3 - 2013)
Everlasting (Aces High MC - Charleston Book 6 - 2020)
Wait for Me (Savage Vipers MC Book 1 - 2022)
Crushed (Aces High MC - Tallahassee Book 1 - 2020)
The Forgotten Wife (Robeson Family Novel Book 1 - 2020)