“OldSpend” is the amount of external funds applied before Friday, April 17, 2015 18:00:00 UTC.
From Steam support regarding package only:
This row includes the portion of the account’s total funds spent that could not be transferred. For example, a hardware purchase, gifted game, or in-game item does not count toward Package Only Spend, but a game purchase for your own library would.
From the page with the values:
From Steam support regarding package only:
Yes, I read that. It did not clarify what I was asking.
You asked what package only means, and I found an answer.
Total is total, with old spend being the cutoff of old spending.
None of the numbers are guaranteed to add up to each other.
I don’t know what’s missing from the reply.
deleted by creator
From the steam page: