Warning. Today's offering may give you a headache. It covers number of pages, font and font size, cost of printing, cost per page, book size, pricing and royalties to be received when you convert an e-book to a KDP (Kindle Direct Publishing) paperback, or even just going straight to KDP paperback.
Naturally, if you can get your manuscript printed by a traditional publisher, then good for you and your book. That option just might keep you from eating Advil by the handful like M & M's. Professional publishing will handle all your book formatting, printing and distribution work. You may have to handle your own publicity, but then, unless you are with one of the big houses, we are getting there anyway. And, with an advance (assuming you get one) plus with traditional distribution, you may get paid more money. I've heard more money is generally a good thing for writers.
If you don't go traditional, then you will have to figure out a way to publish your book on your own. Create Space used to be one option for your manuscript to get printed in paperback form, however Create Space doesn't exist anymore. Amazon gobbled it up. KDP took the software it wanted and developed its own method of getting the job done. So, assuming you are going the KDP paperback route, allow me to make you aware of some of the decisions you will have to make.
Bigger is not necessarily better. There is a balancing act to consider. The number of pages in your book is determined by the number of words in your manuscript, the font used, the size of the font, the size of the book itself and how much fluff you put in it. As examples, we will use the six e-books I've converted so far. Each paperback is in Garamond font with a 13 size. It is easy to read and is an accepted font. Change the font type or size and you will have more or less pages. All my books are 5.5" x 8.5", which is an acceptable size. Change the book size and you will have more or less pages.
Why does the number of pages matter? Because when KDP starts calculating their share versus your share of the profits, they deduct a base amount for printing, plus a small amount for each page in your book, plus their royalty. So, in my 162 page paperback with a selling price of $8.99, the total printing cost is $2.80, my royalty is $2.60 if Amazon sells it and $.80 if another distributor sells it. My 210 page paperback at the same selling price of $8.99 has a total printing cost of $3.35, the royalty is $2.02 with an expanded royalty of $.23 if sold by another distributor.
You can set your own price, however KDP will tell you the minimum price you can set on your book. When you run the figures on their calculator for this minimum price, you may find your royalty is no more than a penny and your expanded royalty is in the hole, meaning no other distributor will sell your book. But then, you are going to set a high enough price to make a decent royalty, yet not so high that no one will buy your book. Right? The KDP calculator lets you enter your figures and in return, it provides you with what the costs and royalties will be.
Every book has what I call fluff in it. Usually, fluff is not reading material, but it is necessary to the book. Examples are the Table of Contents, the copyright page, the Bibliography, the About the Author page, a list of other books by the author and however many blank pages are needed to get certain pages to fall on the right side of the book. You may or may not also have an introduction, pages of quotes from reviewers, an acknowledgement page, etc.
My books have six unnumbered pages in the front, followed by the numbered pages with story on them. Since 9 is my brand and all my books (save one) have 9 in the title, each book has 9 stories in it. Now, because some of my stories have a smaller word count in them, which makes for a smaller book, I will then throw in a 10th story in that series and call it a free Bonus Story. Also, to advertise another of my paperbacks, at the end of most of these books, I will add up to five pages of a story from a different book. Naturally, these five pages end on a cliff-hanger with an inducement for the reader to buy that next book in order to finish the story. You should know though that all these pages up the cost of printing.
Remember that $2.80 printing cost and that $3.35 printing cost? That is roughly my price to obtain author copies. Interestingly enough, when I do order author copies, I can get up to 999 at a time. Why draw the line at 999? I have no idea. Maybe because Amazon is switching away from Fedex and UPS to their own delivery system called Amazon Prime (I've seen their trucks) and therefore they are afraid of hurting their deliverymen's backs? Personally, I wouldn't know what to do with that many copies of my books.
NOTE: Author copies do not qualify for Amazon Prime free shipping.
I won't go into covers except to say that KDP's free Cover Creator software does have some nice generic designs where the author adds his own title and back cover blurbs. But, for my purposes, I use the art work my buddy does.
Let us know if you try KDP paperbacks and how well that process works for you.