I am going to publish my second book (a technical book on Einstein's relativity), probably with a UK publisher. I am trying to find an editor for it, and I would be very pleased if someone guides me through this.
It is not necessary for the editor to go through the entire text and calculations but rather it suffices to copyedit the first 20 pages (Preface & Introduction) of the book plus (if possible) those words/sentences of the remaining of the book that are marked in color by me.
I have a problem in this regard:
Unfortunately, the US sanctions against my country (Iran) caused our monetary unit to dramatically lose its value against the US dollar. Indeed, one US dollar is now nearly "seven" times more expensive compared to four years ago, and thus I cannot afford the editing fees.
However, I can mention the editor's name in the publisher Agreement and want them to send their editing fees subtracting from my royalties in some future time. Moreover, I would acknowledge them in the book as the editor.
Is it possible for me to find an editor accepting these conditions?