故事來自文學城，原文是中文。
To find a dish companion for my dinner, I went to a nearby grocery store and picked up a medium-sized organic white onion.
It must be organic, everything I consume must be organic, no matter how costly it is.
At the checkout, I was told to pay $2.79.
Having paid with my credit card, I walked out of the grocery store.
As I walked, it was haunting my mind that why this damn onion was so expensive, almost $3 for such a tiny one,
much more expensive than in New York City.
It suddenly crossed my mind that the price tag reads $2.49 per pound.
This small onion could not be over one pound.
The cashier must have made a mistake. I checked the receipt, and it reads $3.99 per pound, 0.70 pounds.
I went back into the grocery store, and directed my first jab at the cashier: "You did the wrong math!".
He looked embarrassed and immediately called the manager. The manager arrived shortly.
He spent a while punching on the cash register panel and finally told me, "I am sorry, we need to refund you twenty-one cents."
I directed my second jab, "That is still not correct. This onion is $2.49 per pound, you should refund me more."
The manager reweighed the onion, which turned out to be 0.69 pounds, and said, "You should be refunded $1.01."
I thought, "That makes sense.". Eventually, the onion ended up costing me $1.74.
I have developed a habit of mentally calculating and verifying the total when I shop. Many stores have a nasty habit of overcharging customers.
I have caught them overcharging me numerous times.
