as much as possible unique dutch visitors

Good day. For our website in the netherlands we are looking fo as much as possible unique visitors. In the past we have worked with different people we first pay and than they did not do anything. So in this case i first want to see the result ( we will offcourse have our own screen to follow the visitors) and than we will pay. So a sort of no cure no pay. So if you know what you are doing you have no risk. Please mail me how much traffic you can get to me and how much this costs. It is a contact/dating website fr dutch people. No software just real quality visitors.