What would be important to help the sale of these fine old tools is to be sure to keep all the random bits of tooling with the machines. Chucks, steadies, toolholders etc with the lathe, drill bits and vise with the drill press. Is there a chuck for it? Duplicate sizes of drill bit could go to the lathe pile, if they fit in the tailstock.
If all are in good working order and not badly rusted I would guess the hacksaw and drill press are under $500, drill press closer to $500 and lathe could be $1000 if it is well tooled, priced with the others if not. I did see a loose chuck in on of the pics.
Having these all running to show prospective buyers is also a BIG plus.