Have a checkup, get a discount on yarn?

I just got an e-newsletter from a yarn store in Michigan. The owners, both of whose lives have been touched by cancer, read that women have started slacking off on their annual checkups. To encourage their customers to get those checkups, they're issuing a card that, when validated on the back by a medical professional, will give the cardholder a 10% discount on her (or, presumably, his) next purchase at the shop. The owners said that we deserve a reward for going through what we do at exams. They got that right!