Hello, and thanks for inviting me to bid! I know that my experience (specifically with writing sales content, article re-writing, and SEO techniques) will ensure that you'll be happy with the finished product when you select my bid. I have a lot of experience, and as a native English speaker with a bachelor's degree in English, I can also assure you that your sales text will be grammatically correct and well-written. I based my bid on the $7 per page you mentioned. Thanks for considering my bid, and I hope to work with you soon!