Just keep cruising CL. It will happen in time. I've purchased a couple of vintage machines for very good prices on CL. I also just picked up a FW card table for $12 on CL. The deals are there, they just take time. I'm looking for a 301 myself but not willing to pay alot of $$. It, too, will happen - in time.
ETA - when doing a search on CL, I use the term 'sewing'. Many people don't know what they have so if you limit your search to '301A' for example, you may be missing some opportunities. Just a thought.