I find lemon and honey the best things for a sore throat. They both are anti-bacterial and they actually taste great in tea....baking soda and salt are both just terrible.
But technically, if he's Harvey Dent instead of Two Face, doesn't that mean he's the upstanding DA before the horrific accident? If so, then he's a good guy, right?
Maybe they just put out the stupidly expensive bag to look fancy and didn't actually want or expect anyone to buy it. Maybe she was trying to save Opera from a big waste of money.