I have two Singer 201 (1938 and 1958) and one Singer 301 (made in?) and a Singer Featherweight (1952) in addition to my Bernina 930 (1983).
I bought one Singer 201 for $150 around 1985 but don't remember where.
I bought one Singer 201 at a Singer sewing machine store around 1988 for parts for 25 cents (so they could take it off their books) and had it repaired for $70 (it needed a new motor).
I got the Singer 301 at an antique shop. I saw an "odd" shaped suitcase in a stack and "checked it out". I asked to plug in the machine to be sure it worked...it did...and paid $25.
The Featherweight was inherited from my aunt (the original owner) via my Mother in the late 1990's.
My Bernina 930 was new in 1983 for either $1,200 or $1,400 when I received a surprise inheritance. It has been my best gift to myself as its tension is so dependable. (Sadly I have lost the bag containing all the machine feet. Boo hoo!)
They are all wonderful machines.