Why does In the Mood continue to steadily sell over ten books a day, and Isn't It Romantic? continues to sell close to that pace, when my other books (a couple of which are very similar in cover and tone) don't sell nearly that many?
I feel like if I understood the answer to this question, I would understand the secrets of the universe, or at least the secrets of selling Kindle books effectively. To quote Commander Data, more study is clearly indicated.
In the meantime, I'll be writing another short, fluffy novella. If that's what the readers like, that's what the readers get!