Content Writer need ongoing basic for my site

Hello guys, I need about 10 articles for my website for "photo editing services". Each article, must have 5-7 keyword phrase, without change words. You must mark all keyword phrase in text bold type. Each article, must have 600 words. Each article, must contain only relevant information! Each article, must be unique! (checking plagiarism) i will need about 100 articles next 4 months. so i need long terms partner and price is reasonable. i will pay 2$ per unique article. i will check smallseotools.com. we need 100% unique. thanks