Winter is a very poor time to look for machines. Spring is a great time. You're probably going to see quite a lot coming for sale over the next couple of months.
South Bends are a well-known brand and command a very high price because of it. Atlas is another over-priced band. These things often attract as many collectors as actual users. Keep an eye out for Logan lathes - in fact one might say you're in Logan country. If you're talking about a benchtop (10" swing or less) then under 1K should be quite feasible.
I am hoping spring cleaning and auction season kicks in pretty quick.
I learned on a South Bend like most everyone I imagine. Part of my problem is that as I see other brands and models show up I go to research them and it takes time but has probably saved me from jumping on some "good deals" that would have been a nightmare to correct any issues or ended up costing more than I want to spend to make right.
I am learning what to avoid slowly but surely.
Right now I am looking at a Logan 200 for $1,000. 3j & 4j, change gears, faceplates, Kennedy tool box, couple of mics, couple of indicators, couple of Armstrong style tool holders, couple of insert tool holders, probably 50 inserts and some other assorted tool box dross that may actually be worthwhile eventually.
Another is a 1920's SB 13" that comes with a chuck and a lantern tool post. It is really old school but seems to be in good shape if I can ever get the seller to let me come see it. I can see it being a bit more work and a lot more expense to get running. But I can see it cleaned and polished up and moving on down the road to help finance more machines later on.
I'm sick, I thought BRD was bad, now I am fixing up and selling off stuff I haven't even seen in person. I think my wife will at some point be begging me to go back to buying guns instead of tools.