The book sells. Sometimes it sells well, sometimes not, but it sells. The AMS ad campaigns have good CTR, but poor conversion rates. Once the readers do take the plunge, they either throw the book away in 10 seconds or gulp it down cover to cover in a day or two, and scream for more. This is quite apparent looking at the spikes in KENPC and comparing to movements in book ranking. There is, essentially, no middle ground. Readers either utterly love it and can't put it down, or they absolutely hate it and immediately throw it away.
The audience is roughly 70% male, 30% female. They like military SF, mysteries and romance, although not necessarily all three at once. They also like post-apocalyptic and hard SF. The romance tends to be of the "Kidnapped by Savage Pirate/Viking/Alien/Barbarian" variety, and this seems to be where the book gets most of its female audience.
From all of the above, it is clear that the AMS campaign ad copy as it stands now is poorly written. The campaign does not attract enough of the kinds of people who would buy the book. Alternatively, it attracts too many of the kind who won't. Therefore, new ad copy is needed. Here is the book:
I'm terrible at Ad copy but I wanted to say that your pitch was compelling. I don't read hard sci-fi, or I would pick it up.
I am wondering why you have a woman on the cover when your pitch centers around 2 men. Maybe swap out the woman for a male figure might help? There's nothing wrong with the cover, it just seemed odd because no woman was mentioned in the pitch.
Well, the lady on the cover is one of the main characters, and she's in the preview. Truth be told, I expect she gets me a lot of my readers.
I won't switch the cover. It's beautiful, it works great with the preview read, and it gives me excellent CTR. Besides, it would be very expensive. But I will take your response as a vote for some ad copy centered on the lady on the cover. Thank you for your help.
P.S. You should read the preview. You'd be surprised as to how different this book is from what you expect hard SF to be. The sole criteria for hard SF are that there be real science in the background and that all excursions into the fantastic remain scientific, plausible, consistent and limited in scope (i.e. even the invented science must be grounded in the real thing, and feel real). The difference between good hard SF and mediocre hard SF is that the good stuff centers on the characters, not the science.