My sister bought an estate after a friend died. There were 3 houses that were fully furnished. Inside one was a beautiful tredle machine that works. I asked her how much she wanted for it and she said to make her an offer. I don't know the particulars about the machine. I didn't examine it very closely but, it seemed in excellent shape for its age. Cabinet and all. The man used to clean and restore old machines. What would be a reasonable offer?