If you want your manuscript proofread, DartFrog's proofreading service is affordable, fast and of the highest quality. 1.5 cents per word.
Line edits dive deeper than a proofread and involve more than just grammatical issues. Style, pacing, sentence construction, storyline and character development are all part of the line edit review process. 2.5 cents per word.
Developmental editing deals with structural issues to your manuscript and is the most invasive of all. Typically, a proofread is required after the developmental edits are finished, as the developmental editor is focused only on the big picture. 3.5 cents per word.