It's not a terribly valuable machine so far as that goes but it's in lovely condition-both the table and the machine and you have plenty of feet for it too. The back clamp feet like that are harder to get your hands on so for someone who want it this is a lovely package. I am sure it just needs a little help to get things un-stuck, an oiling and a belt and it should be ready to sew.
I am always heartbroken at thrift stores when I see machines that children have messed with and tension parts are removed or destroyed, accessories are lost and manuals carelessly tossed away. It would be better for the machine to try and find a new home without dumping it at a thrift IMO.