I’ve read a lot of mixed opinions about grizzly on practical machinist, not sure what to think of them
Grizzly sells a wide range, from barely useful lathe shaped objects, all the way up to reasonably industrial. Priced the full range too, which should tell you a fair bit about what you should expect from them, depending on where in the spectrum you are looking.
It amounts to stuff that just does not get much cheaper, when you are building stuff with fairly cheap labor. Quality bearings and quality castings, all done right, are expensive world wide!
If those are the going rates for that kind of rusted up junk, out there, shop somewhere else. Trucking is pretty cheap.
A good source of data, if you are not already familiar with it, is
www.lathes.co.uk Lists of names, with descriptions, some statements about expected quality, and general information, about hundreds of different makes. Great resource.
Of the three machines in the OP, I think the only one I would drive across town to look at (if the price wasn't so out of line as to make me think a deal was not possible) is the Standard Modern, as it at least has a Cam-Lock spindle. But it would have to look awfully shiny and unused, to make me figure looking at it was worth the gas money to get there, I figure. It has a taper attachment, though it may not be complete (cannot see the locking mechanism for it in the pic)
The Harrison, among other things, has a very long headstock, and that will make through the spindle work harder to set up. Great for getting precision out of it for other purposes, provided it's not beat, but not a great choice if you intend barrel work, etc., I think.
The Hendey is for someone that wants the experience of running an old slow lathe like was used to make Model T parts... Good Farm lathe if cheap. Like, really really cheap. Ten percent or less of the ask, cheap.
At some point, you have to ask yourself, if you wish to have a hobby of rebuilding old lathes, or using them.
In all seriousness, you are a LOT closer to the East Coast Rust Belt portion of the States than I am, and that is truly, the home of the mantra that "Old American Iron is Best!", and they have some cause to believe that, with as much small scale manufacturing as went on there. The fellows out that way have been spoiled for choices, of good quality, old machine tools that are not all beat to hell and back.
It may be worth you while to have a good look at what is available from as far away as south of New York or even further.
Start looking at machine tool dealer's sites, and see what is out there. They often get in smaller machines that they really do not normally handle, and sometimes they sell them for pretty darn fair prices.
On that note, it does pay to understand exactly WHO you are dealing with. There is a character out on the Eastern Seaboard name of Al Babin, who is worth doing some reading about... LOL! Not to be mistaken for Babin Machine Tools or Works, IIRC, who is not related, and has an actual 'good' reputation!