I bought a well used US made Lablond Regal 13" lathe for about $2000.00 in 1995 from a machine rebuilder who did not think it was worth rebuilding. The lathe is not up to the precision standards of the of machinists but it is more than good enough for anything I want to do. The first thing I used it for was to make an adapter to accept the 1 1/4" - 8 thread on my wood turning chucks and then mounting a trim router on the cross slide.
View attachment 35409 This photo shows the thread cutting being done on the lid for an urn similar to my avatar (note: The original photo showed a lot more however I had to crop it to make it small enough to load to the forum). On the left of the photo the adapter is barely visible and on the right is the angle plate that I used to mount the router to the cross slide. This lathe has settable thread pitch from 4 per inch up to the hundreds, however on wood 16 pitch is the maximum with 11 pitch used the most.
In addition to the previously mentioned sources try online machinery auctions that often have lathes, however the price may get high.