Now is probably not the best time to be buying a used lathe, I've noticed a reduction in machines showing up on Craigslist and even ebay since the lockdown. Things do still pop up, so is worth keeping an eye open, but don't get desperate thinking what you see now is all there is. Also with CL (and likely your KSL) you need to check often and strike fast when you see a real deal, or someone else will get it. It isn't like ebay where things hang around for a week. The really good deals can be gone in hours.
Even if you can't make the drive look at other Craigslist areas, Phoenix, Reno, Sacramento, San Francisco, and Los Angeles just to see what is out there and some idea of prices. I would also be very leary of buying a lathe or mill sight unseen, photos can give you an idea, but still a lot of unknowns. Ebay is good for tooling, but the difficulty in getting hands on makes it not so great for machines. Ebay machine prices also tend to be considerably higher than Craigslist in general.
As far as the lathe you posted, it is a change gear lathe and none of that tooling is anything special. It does not have a steady rest or follow rest, those are not the easiest parts to find and they can be relatively expensive when you do. I've seen them on ebay for $300-400 each, assume you get them for half that and you are still looking at 1/2 again what you paid for the lathe. Also no 4 Jaw chuck, that could be $100-200 for an inexpensive import, more for something better. It does have a bunch of change gear in its favor.
A QCGB is not something easily added later. On a smaller lathe I'd be less concerned about it since it is uncommon on lathes smaller than 10", but they are pretty common on older 10" and larger lathes, so worth holding out for unless it is checking off all of your other wants. The tooling included with a lathe can make a huge difference between an ok deal and a great deal particularly with a vintage lathe where parts and tooling often require a hunt.