I am working on my Google adwords campaign for this spring and I would like to be a little more scientific about my bids. I have been studying the Google keyword planner but, it doesn't really answer my questions. For instance, take the keyword "mowing" at the national level the competition rating is low and the average bid price is $2.05. At the New York state level the competition is also low but, the bid price is $.54, and at my local level it is low as well but, there is not enough data to provide a price. Here's another confusing example: the keyword "grass cutting" nationally it is high and a bid price of $2.04. The states' numbers are medium and a bid price of $3.44, while at the local level once again I see that the competition rating is low but, no price. Other keywords show similar results. So my question is: how do I figure out a competitive price without throwing my money away.