Do you complain about christmas drink being 1 dollar cheaper in summer when you thought it was only on sale during winter and about how the supermarket essentially stole from you?
How they coerced you into giving them money for something you thought was an equal trade?
Maybe it doesn't matter the first time, it's just 1 dollar, but how about 50 christmases in?
What if you bought 50 on the first christmas, would that make it worse, since you couldn't have known?
Would you demand you be refunded 50 dollars?