what does the seller mean by "no guts" as it's unlikely they pulled them out of the machine. Does he mean they removed all the treadle parts, or that it comes with what is seen and nothing is in the drawers.
That machine is in super nice shape, and New Homes of that era are not hard to find (only ones in that nice of shape) so getting the accessories (feet, shuttle, needles) are not that hard, though they are only available as vintage.
If you want a machine that you can easily get parts for, then your best bet is to go with a Singer high arm type. Or one of the few that took the same shuttle/needles as Singer used at that time.