I bought sun screen cream at one of my favorite supermarket. I found two size of the cream and couldn't find the each price. I brought them to casher for asking the price.
Cashier : Let me check....well.....the small one is $3.99- and the big one is $10.99-
Yuki : wow it's big difference between them!
Cashier : yes..so I will give you big one for $3.99-
Yuki : .......(didn't get what he said in the begging)...why??
Charier : because this is expensive!
So, I got $7- discount by accident. It was small happy. Yes!