I don't use any space at all according to Google
(The first GB is free, something you will not be informed about until you have reached that limit. For simple gMail text it's 5GB - should have been the other way round if you ask me)
I did check my account.
The field for my storage usage is: BLANK
Does that means ZERO or???
Why then should I buy more space?
I've informed Google about this lack of a result on their service page.
In the meantime, enjoy photos from my last Sunday's visit around in Oslo. It's posted on Facebook.
(Hope you have access. Searching for a better, permanent solution, but work takes allmost all my time just now)