[mothered]

Im going to do an amazon order from a supplier and Im going to say that i received the wrong item, yes changing every detail when delivery the other item

The actual item weighs 1.18kg according to amazon. And the other item weighs 1.2kg.
Delivery weight for actual item is 1.4kg and the other item is 1.5kg.

How Is It that the Item (net) weight Is a 20 gram difference between the two, yet the shipping (gross) weight, has a variance of 100 grams?

I assume quite a bit of extra packing.

Yeah the actual one is a graphics card. Do you think i would get away with this?

As with every SE, It's not possible to be conclusive but given there's marginal difference In weight (particularly the Item), I believe you should be fine.