Write 20 350-word articles

I need 20 350-450 word articles on different topics and keywords. Any necessary research can be done easily online, though some topics won't take much if any at all. Native English speakers are preferred, but it's not important as long as you write like a native English speaker. I run everything through 2 separate plagiarism checkers, and do not pay for copied content. Please PM me with a little note about your writing experience, as well as a sample of work you've already written. Know that I might ask for a few sample sentences on a topic to make sure you write as well as any sample you send. And that if I accept you, you'll need to send the first article before continuing so I can be assured of the quality. If it doesn't measure up, then the agreement will be terminated. Please bid what you actually expect to be paid, and give a realistic estimate of the time it will take you. Thank you!