My/our best deal was the Singer 120U that we got from the lady I met in the craft aisle at Wal-Mart in The Woodlands. We got to talking about sewing when I asked if they still had fabric (not at that one) and some how or other we ended up talking about sewing heavier fabric for RenFaire costuming and she said she used to make things with Fun Fur, but didn't any longer and had a machine if I was interested in one that would do the heavier stuff. Now get this...when I asked the price, she said, "just come by my house and pick it up, I live in ---- just off of ----"!!!
This is a commercial machine in a good sized formica table, with several attachments, 3 plastic boxes of bobbins, the original manual copyright 1973, a treadle style foot feed that goes from a nice easy purr to omigosh take off for Mars fast. Even had a big bottle of the oil to go with it.
Sorry no pics...will ask SIL to take some. He is planning to use it for sewing leather. But the book says it can sew anything even really fine thin stuff.