not current bid but you can check the estimated traffic/day and max/min bids at https://adwords.google.com/select/TrafficEstimatorSandbox this is an effective estimation tool. but be sure these are cpc bids and cpc bids are different from content bids.
yes, i think this is very good, you can know how money you can earn with some keyword and black list the address make a liittle money
google doesnot show bid. but if you have a google account you can check the min bids on google estimator for google sherch networks but none for content networks..