Update File Size Not Shown

PLEASE, in notifications about updates, state the SIZE OF THE FILE. Even searching, I am unable to find the sizes of update files until I begin the update.

I use a satellite ISP which has a data cap and hours when data is free. Without knowing the size of the file, I do not know when or even if I will download the file.

It would be very simple to include the size of the file in the notifications about updates. Why is it not done?