How much are you willing to pay?
Okay, all jokes aside, “how much” depends on a lot of factors such as:
- Your particular set of skills (can you design your own cover/interior formatting?)
- The quality you’re aiming for.
- Whether or not you’re planning on having both an e-book version and a print version of your book.
- The emphasis you want to place on marketing and advertising your book.
All in all, there are two main considerations: how much you’re willing to pay in terms of money or effort in order to produce quality.