How do you do woven garments costing?

Jefferson Asia Ltd.

this can be calculate many way .....
the easy & common formullay is :
( fabric construction X yarn price X wastage )
+accessories + cm + if washing/print/embroidery/ etc
+ commercial charge = Fob us$ (garments price)/dzn.
to find out Fabric Construction formula , detail pricing & any information regarding Sweater , Knit & Woven item business from Bangladesh ...knock me w/out hesitation .
thnkx , Reza