["Our daughter's dance program sent out new tuition notices.  They've decided to change the pay structure and everything at the last minute!", "That's so mean! I think they should honor the original prices they set", "I agree, but they've decided to change how they run the entire place over the summer apparently.  It's going to cost us quite a bit more and we had no warning."]
I think that's unethical. I would switch to a new one if I could (and all her friends weren't there)
Our daughter's dance program sent out new tuition notices.  They decided to change the entire pay structure and it's going to cost us a lot more to send her now.