The cost of repairs of the newer machines is just one of the many reasons vintage machines are so popular. They are easy to clean and maintain at home. I have a vintage and my "repair guy" told me just clean and oil , and they really don't require much else. In fact he told me don't bother to bring it in if you are cleaning and oiling regularly, except for about every 5 years or more. It been 15 years since I took it in for a professional cleaning... I asked him if he thought it was "due" he told me "nope" just keep on your doing what your doing.
My newer computerized machine... its an annual charge.