Say I'm selling software (desktop, web, whatever)...how much do you think it would cost a cost on that ad? Example keywords would be the names of products combined with "software"... How can I have a rough estimate? Can I test different combinations on Google Adwords account?
when you create a campaign, there is an estimator tool you can use after you enter the keywords.... it's a rough estimate and shouldn't be taken literally.... the only way to know for sure is let it run and see what happens