Why are some other Mini Mills on the market cheaper than yours?

Because they are of lower specification.  Our most popular Mini Mill, the 560, has 560mm x 400mm x 500mm travel on X, Y and Z.  It has an 8,000 rpm spindle, more power, a 12 station tool changer, heavier weight and a much better and easier to use control.  Even though we call it a Mini Mill, it compares very favorably to our competitors’ smaller VMC products