I should add that I probably wouldn't ship it. That machine is most likely an antique and it would take a masterful packing job to get it to its destination undamaged. It is probably fragile. The cabinet also deserves a lot of respectful packing.
Why don't you find the nearest quilt guild and see if anyone wants it? (Sob!) If there was any way I could buy it, I would. I would think $200 would be the most you could get from a motivated buyer.