Originally Posted by KarenS
I just recently purchased a 503 off Craigslist for $100. Mine is in a cabinet with 3 drawers, has a buttonholer, zigzagger, and many cams and feet. I love it! I cleaned it and oiled it myself, but am not sure if I did a good job or not. It seems to be a little noisier than I thought it would be.
Some of them are noisy - may need the motor overhauled. I do them myself but you can pull the motor and take it to a motor shop and have them overhaul it.