Online Marketing/Sales Required

We need a professional online marketer/seller who can generate guaranteed sales for our newly developed web based software regarding the deals/coupon niche based upon Yipit API's. We are start up so at the moment we are on a very limited budget of $200 maximum for this project so place your competitive bids with confirmations that how many guaranteed sales per month you can give to us as after successful completion of this project there might be possibility to retain the winning candidate again and again each month with higher budgets