I have a few health site and i constantly need article for some rare niche. I will do a research and make a list of stuff that need to be on a website like these. Will it be hard for someone who doesn't know anything about oil to expand this to a full article? And will you charge less since you don't need to "think" and research for the topic?
A quick question: If you're already doing all the research and taking the time to prepare such an extensive list of facts, why not just write the article yourself? To answer your questions: It might be hard to expand your facts - it just depends on the writer and their ability levels. I personally would not charge less. My rates are for the end result - the amount of time I spend researching, editing and brainstorming are built in to my rate.