It's deceptive and unethical, and takes advantage of those least able to understand what's happening. I guess what really makes me angry is how Caffe Nero claims to be an ethical business (they're not, for other reasons also, but still, that's one of their big claims). They have a huge section on their website on their "ethics" - so this type of defrauding behaviour is far worse than from other companies, since it goes so against what they (falsely) claim to the public they are.