I got a Singer 404 for $1.00, a Necchi Mira in a cabinet for $10.00 and Necchi BU for $20.00. But that was all over ten years ago.
I did get Singer 66-18 for $10.00, but I gave that away.
I have not been fortunate enough to get piles of fabric at yard sales for little or nothing.
Then there was my Mom's stuff that got away before I signed up for this board. Sigh.