The Google AdWords ROI calculator allows you to determine the optimal spending level and return on investment for running an AdWords advertising program.

Using the calculator you can determine how much profit you will make based on what daily spending level you choose, ClickThrough Rates, your product's pricing and costs, and the amount that it costs you per click for the keywords you want to target.

Also includes a sample of the 280 Group Google AdWords Tips and Strategies booklet.