There's one on my local craigslist for $40. Does anyone know if it is all metal inside? Or are there plastic gears or cams? The open arm would be handy and the multiple stitch zig zag is also nice. Seems like the feed dogs can be dropped also. Plus it has a buttonhole setting which I might use once or twice in my (or its?) lifetime.
http://newyork.craigslist.org/brk/art/4162926934.html