Because it is a Trump plane, one of a kind, would bring in many more dollars over true value.
“Why would selling them imply he’s profiting off his presidency?”
Because the leftards will inevitably argue that the aircraft are worth less than whatever someone pays for them and that the difference is a bribe.
Because he can only sell the planes because the taxpayers now provide him with one. One has to stretch logic a bit to figure out what the left is going to conjure up.
I suspect that he will reconsider letting his sons use them, as well as Ivanka. Things are different now - his sons and daughter (and grandkids) are more open to danger now when they fly commercial....just happened to Ivanka.
Presumably collectors and/or other people would pay a "premium" for them because they have some value above & beyond that which other used planes and helicopters that are same make/model would be worth.
That's what (I think...) people mean when they say Trump would be profiting off the Presidency.
I think that's crap, but that's just me.
If you were a lefty, liberal journalist, you would immediately understand, accept, and then write about what a criminal he was.