I'm starting to use the Google AdWords API to development an application, I've found a problem with it, I would like to estimate the generated traffic by a keyword, but this action has a cost by call, doing some operations(I need to do 2000 calls approximately), the cost for my application will be exagerate, so I need to know if there is a way to get the same information without use the Google AdWords API. I thought to use a parser to get the data, but the tool use a captcha.