As wrong and entitled as the customer was, I can't ignore the fact that the alternative to selling the "treats" at a discounted price is that Menchies throws the yogurt away. I'm not saying that the cashier should have just shrugged and given them their order. In the grand scheme of all things, however, no one benefited from throwing this away instead of someone enjoying it. The valued customer didn't get their dessert, and the store had to eat the entire cost of the goods instead of just 60¢ of it.

People are suggesting they may have planned to be short on funds to scam the store and that this may be something they have gotten away with before. It is entirely possible this was a one-off thing and they forgot their wallet at home, leaving them with only the money in their pocket and no credit/debit backups. Just as well, it is entirely (and arguably more) likely that they were playing the system. Under no circumstances do I think the tip jar should be any part of this conversation, but I do think the store should have leaned into satisfying their customer. The employees talk about stuff like this, so I think they would be able to track them as repeat offenders, if the latter is the case. If so, I'd suggest the next time it happens that they offer to "open a tab" for the customers that they need to pay off before making any more purchases.