The book value is at par. The market to market value is probably closer to a 15% discount from par if they tried to liquidate immediately. So this is likely actually a premium.
Correct. The only way someone makes money on these is by borrowing against them. Conveniently, it now looks like the Fed will lend against the face value of Treasuries at the discount window.
plus you pay overnight rate+10 basis points, so it is not totally free money either
A few years from now current buyers may even make money on these. I was thinking the Treasury will take over the bonds - they certainly have the capability to wait a few years.