"You're Selling your Sewing Machine - I hate to break it to you..."
https://tampa.craigslist.org/hdo/atq/4702575926.html
Well done!! The average price range of many machines that are listed here that are dirty, need oiling, needs fixing, missing something, smelly/stained/broken case is probably about $250 -$400. Why?.... because it is old and they think they can make some $ on this "antique"