Version 2.100 and up
Instead of manually creating a new rate card with all it's ad prices ADvendio offers you a clone button which directly copies rate card with all ad prices.
Here is how to use it (make sure you administrator has enabled this button to the correct users).
You will receive a message stating that your rate card gets created and receive a message when done. Afterward check your newly created rate card and update the rates, most easily done by using the 3.3.3 Create and Update Rates Wizard.