I have that Singer 401A machine and really love it. Used it over 40 years until I retired and purchased my Bernina. I did get my Singer out recently to make some heavy drapes and it still really runs well. I guess I am too emotionally attached to it and I could not sell it. I do remember when I bought it I thought I was spending way too much for the machine which cost me around $300 at the time.
Ruby Y Campos