You'd be surprised at the results of an add in the paper could bring. Such as..."Wanted to buy" , older American built floor model drill press)
I have three floor presses, all of them built when they were still building good ones.
A Walker-Turner,(division of Kearney & Trecker, Plainfield, NJ.
a Delta Rockwell, ( Milwukee, WI.)
and a fine old Craftsman, ( By the King-Seely Corp,) All going back to the
50's and not wore out.
Most important on all of them is they have a QUILL lock. About impossible to buy a new one with that feature. Cast iron is a must as well with slots in the table. I have counter weights on them to make adjustment easier.
I should point out however, that I live in an industrialised area whereby there is much good used machinery to be had. Just be sure there isn't any free play in your chuck/quill area, ( for run out). Most will be with a 1/2" chuck, which will work for most of what you do. Other chucks are available if you know where to look.
Speaking of chucks, if you find a used press, take along a .062 drill bit and see if it chucks up tightly.
I would not buy anything available today unless it came out of a machine shop, or one that has been in someones basement for about 40 years, and even then, it would have to be industrial quality.
A few have been mentioned in this thread, certainly NOT the new Wilton, Grizzly, or Craftsman.
If you can find one of what I have, buy it...