[mothered]

Im pretty sure the weight you have seen on amazon is without the case for the HDD, and just the driv, on other sites it must be all included.

You certainly have a valid point, and It's understandable If the HDD Is packaged/comes with a separate enclosure.

However If there are no detachable parts, I don't see why they'd segregate the weight.

I noticed the 4TB  comes by default in packaging that shows the item so I'll have to get it shipped in amaazon packaging, is that an issue? I worry about them remembering packaging an item in the shipping facility, paranoid I know but still :/

You're not paranoid at all.

It's always good practice to cover every angle when SEing.