Sell an item by internet under 10% commission

We are a company focused in B2C, mostly in Amazon, and selling only high quality coffee thermos. Recently we have started a marketing campaign, and we are looking for people for step 4. What we want is freelancers who post a customized coupon code with -10% discount in social media, forums, blogs, etc, for a promotion we will make for 1 month starting from next day 20th This campaign must be focused in customers from USA only. We provide marketing material as descriptions, pictures, videos and so on. Each seller will have its own coupon code, so we can track the sales volume. Payment will be: +5% For each sell +5% For 4-5 stars review from buyers A prepayment or free samples can be made after checking each curriculum. Other requirements can be also discussed. All jobs will be made within Freelancer.com system for security reasons. No new freelancer's account allowed.