Even if you are a great writer, it is always better if you allow different set of eyes other than yours to proofread and edit your book.
Beginning at $10 for every 500 words, your book will pass through a professional editorial session. It will take care of typos, wordiness, redundancy and so on. It will also correct punctuation, spelling errors, poor sentence structure, , tense issues, and so in order to rephrase for clarity and to enhance readability and consistency.
At the end, you will get two final files:
1. An edited file with tracking
2. Another edited file without tracking
You can accept all the corrections in the file with tracking, or use the file without tracking as your final edited file.