I won this lot last night. I am happy to get it for $165 including shipping.
Unfortunately, I'm sure it's listings like this that encourage uninformed sellers to list their items at ridiculous prices. Recently another group sold for over $400 - it had a two thread embroidery attachment, and without that the lot was worth about $50. The items in this picture were worth maybe $10 without that one foot.
this lot was listed as "vintage sewing machine parts - Singer, Simanco and others"
So - who knows what I'm excited to be adding to my collection?