A Debbie Gilbert posted this image to Facebook.

Gilbert explains that when she went to the post office to send a package to Mexico, she was surprised to see that the package did not weigh what she had expected based on the weight she determined it to be on the scale in her house.
So, she took a kg bag of rice and weighed it on the scale in the Post office. Lo and Behold, the 1kg bag of rice actually weighs 1.86kg!

I hope this scale problem is limited to that specific branch she went into and is not a problem across the board in all the post offices.

On the other hand,, maybe Sugat got the packaging wrong on their rice.