[woot]

Wouldn't I just have to be close to the weight at the time of drop off at the post office/courier?

Always allow a little extra weight for transit and storage time.

When it starts to sublimated sitting in their warehouse shouldn't be an issue anymore.

It depends how long It's sitting In storage.

OK so I'm a bit confused why I need to add extra for storage and transit time? I thought that when the package is dropped off at the post office/depot that they would scan & weight it into the system immediately. The weight of the laptop (assuming box and accessories) would be roughly 2kg (5lbs), according to what I found equivalent weight in dry ice would only last about 24 hrs. The amazon return warehouse is in the opposite coast, would probably take 5 to 7 days to be delivered. The dry ice would have been long gone, haha.

Almost thinking that this might not be the way to go. Hm...