[mothered]

I have no clue what source to believe, but i think around 78 grams. One amazon site says 300 grams the other 452 grams, its ridiculous!

I'd say you're looking at both the Item (net) weight and the package (gross) weight, hence the huge variance In your search.

CPUs are extremely light, so 78 grams makes sense.
Please confirm It.

Btw i switched CPU's because 10900k box looks like a pain to tamper with, i am going for an i7 processor 10th gen. It is 87 grams i found it from 2 reliable sources not just from amazon specifications. 

Btw do i need a amazon account with a good reputation, or just order it and swap the cpu?

Is one 100 euro order enough to give the account a good reputation?

Edit: the box looks like it has stickers on both the up and downside, and no other place where i could cut it open and reglue. Any fixes on this issue?

Your account Is fine.

At 87 grams, you can opt for the missing Item method. Is the CPU visible at all In Its original packaging?