Without any notice that I have been able to find, the value of Starbuck rewards for a package of 12 oz coffee was cut in half (from 10 to 5 stars). While they award 2 stars for every $1 of in-store purchases, they now apparently award less than 1 star for every grocery store $1 spent.
The fact that you can only find this out after the purchase is pretty low.
To put the value of this reward program in perspective, it would now take 25 purchases of a bag of coffee (more than 18 lb) to earn one free latte. Some reward.
Review about: Starbucks Rewards Program.
Reason of review: Rewards program changes.
Preferred solution: Provide notice of rewards program changes.