Editing can occur on many levels. Sometimes you just want a native English speaker to check the basic grammar and sentence structure, sometimes you want more in-depth editing, and sometimes you want a professional editor to substantively edit the text and provide critical feedback. My approach is to first evaluate the document to be edited and determine the level of editing you are interested in; I can then provide an accurate quotation with the best price possible, including any applicable discounts. Contact me today for a free, no-obligation quotation.
Some editing companies list their prices on their website; why don’t you?