Costing in Solid Works

did you meant 'casting' in solidworks mate?

http://www.youtube.com/watch?v=9HSTIlhkun8

Here you go.. :)

I also interested on assembly cost. I'd like to give a predicted price for each part and have the total cost based on the BOM. I.E. if I know that a screw costs 2 ¢ then if the assembly will contain 300 of these screws, it should give me a sum of 6 $ plus the other parts cost.
Something that Varicad is able to handle.