All Systems Red

I did enjoy the first book and was looking forward to continuing the series until I saw the price of the rest of the books. The next book is about 7 cents per page and while this is fairly good I do not see it justifying that price point for a book that is only 149 pages. Checking the rest of the series and they are all similarly priced with the exception of book 5 which is full length and just over 4 cents per page.

Maybe I am missing something but I just don't see how the book justifies the price.