I like the BWS guy's creative accounting.
Took a bottle of red ($18) and a 4 pack of somersby double hard cider ($21). He goes if you spend $40 the somersby is $12, so would you like a $1 bottle of water
So I did and he then gave me the cider for $12, even though that's supposed to be on top of the $40 spend
I gave him the $1 water because it was cold and he looked like he could do with it. He was thankful for it