Hi Chris,
If your machine is a Piedmont, it isn't a Singer. Piedmont was a store brand of The Bay in Canada. If you can post a picture of the machine, people can probably give you some more information about it.
Price really depends on location as well as machine type. Many people here won't give value estimates for that reason, unless they're from your area.
Please post a picture, though, and welcome to the board!
Last edited by Jennifer23; 12-09-2017 at 02:18 PM.