Get a $250 printer and start using it. It may be all you’ll ever need, but after a year or so it’s likely you’ll start seeing other printers with different functions that you think would be useful and will decide to upgrade. Hopefully you’ll know what you want by then.
The article says more clearly “2.7 billion records with Social Security numbers.” The author goes on to say he found 4 records with a friend’s data but in those 4 records were 3 different SSNs. He called the friend and confirmed that one of them was his actual SSN. I guess someone was auto-linking names and SSNs for ID theft purposes and getting it wrong sometimes.
They discovered a thing that everyone’s known forever. Here’s Bruce Schneier in 2008
https://www.schneier.com/blog/archives/2008/04/tracking_vehicl.html