Is there really any such thing as "low maintenance"? A Super is going to do what she/he needs to do keep the course alive and in the condition that is expected. That can vary from day to day, season to season. And no two courses, regardless of proximity, are going to be maintained the same, and at the same cost.
Maybe someone that is a greenskeeper in Europe can verify this, but seems to me that many Supers contract out certain work in Ireland and the UK. For example, sanding fairways might be done by contract that supplies sand, equipment, and labor. Thus, the course might need only 3 or 4 employees.
And, I will say this..what is meant by "excellent"? If you are using the "ideal maintenance meld" to determine excellence, then you are probably taking about a large maintenance budget, regardless of how "low maintenance" you might think it is.