Google Adwords can be used to drive targeted traffic to a sales page. You simply make an ad in your adwords account then use your affiliate link in the target page URL of the ad. Obviously, you will have to continuously measure the conversions and see if the campaign cost is less than the campaign profit in order to keep the campaign running but I am sure you get the idea.
It is a very good idea to use different product promotion strategies so you can figure out what is working and what is not. Try to do split testing and measure the performance of each campaign then take actions accordingly. Changing a few things here and there can increase your profit dramatically. Make sure to place the banner ads on different areas of your site’s pages. Some positions will make the ads more noticeable than others.
When it comes to traffic for sales or leads it varies from industry to industry and country to country, on the top of that it requires other complex process that are suitable only for the advanced paid traffic masters. In this article I will be discussing traffic for branding and improving rank on several web metrics which are responsible for judging the quality of a website such as Alexa rank, Similarweb Rank, Domain Rating, WOT Rank and so on.