[QUOTE=joyce blint;4683815]I would keep in mind that the MIL gave her the one she now has. Wouldn't want to cause bad feelings in the family.[/QUOTE
I agree with this. I'm not familiar with the Singer 4530, but most old Singers have been found to be very reliable with proper care and maintenance. I think that I would ask the new owner of the machine how she feels about having a couple of new feet for the machine or would she like it replaced. IMHO, I would prefer to keep the inherited machine and have a couple of the needed feet.