Assuming the machine works properly, I'd try to get them down to $40-$50, or less, if it were me.
None of those attachments/accessories go with that machine, so you may be able to sell the cams to help defray the costs, and the zippers and buttons wouldn't add any value to me. That machine takes flat pattern discs, which will add to the cost if you decide to get some.
That big brown switch on the cord close to the base of the machine was a poor choice as well.