Seo and content writer wanted - please bid price per 500 word article

I'm looking for an SEO / content writer to write articles for a website. Article topics will include further information about products, general news about the industry and product descriptions. This is an ongoing project and I am looking for someone who has time to write and produce content several times a week. Applicant must be fluent in English, as in a native speaker. I'm looking for someone who uses correct spelling/grammar and can submit articles that don't require further editing. Product descriptions average 250-500 words and most other content articles are approximately 500 words, so please enter your bid based on a 500-word article. Please submit a sample article that you have written. This can either be a sample product description or a sample content article. Any questions, please ask. Thanks!