Just one of the counter staff at one of the post offices brings this up, almost every time I post.
Most what I send is in the small parcel category, so up to 2 kg allowed, typically about 500 grams but I never weigh to input the exact weight. Staff person always comments about the weight of the parcel not matching what it says on the label. He says the item will be pulled aside if I put 600 grams and the item is actually 450 grams, or visa versa. So that pulling aside causes hassle and could delay delivery.
is that true or bonkers? If true, how exact would I need to get it, is "457" close enough to 450, etc.? What margin of difference flags the item?