...Starbucks said it would pay vendors in origin countries a premium price -- up to 10 cents extra per pound -- if they can prove they're protecting the environment and meeting, if not exceeding, the minimum legal requirements for wages, benefits and working conditions...But Starbucks' well-wishers and detractors alike say that progress in the first four months of the two-year test program looks plodding at best. Some criticize the financial incentives as insufficient. Others say the verification process is flawed.