I, too, am wondering about fair rates for editing, as I've been approached by several researchers wanting me to edit their papers for them. I have a science background and I'm working as an editor for a research journal here in Taipei, but I don't have a clue how to charge people for free-lance work. According to the previous forum discussion on this subject, I gathered that a typical rate was similar to private language teaching (NT$1000/hour, I've heard), or approximately NT$300/page, with double rates for rush jobs. I just completed several rounds of extensive revisions on a 24-page paper as a rush job, taking me a total of about 11 hours. Can I (should I?) seriously charge the guy NT$11,000 for this job?!? That seems like a huge chunk of money, but I don't want to cheat myself either. Will he have a heart attack if I ask for that much money? I'd appreciate whatever advice people may have.