I need 10 professional written articles in proper English that are 600 words or more. Each of the topics will be related to the "Dental Field","Teeth Whitening","Wholesale", "Business opportunity". Our site is a distributor for teeth whitening products. I need a writer that is willing to work long term and has knowledge of my topics. My budget is $7/per article and will go up for quality. I will escrow 50% to start and after the first 5 are sent and the quality is accepted the next 50% will be escrow. I have about 100 more articles needed for the related topics for future work. Every article will need to be verified in copyscape.