Logix has an Excel spreadsheet based estimator that will figure quantities and labor hrs for block, rebar, bucking material, concrete, etc. but you need to enter unit costs.  http://www.logixicf.com/index.php?n=resources&o=estimating

Fox Block has a simple estimator for block and concrete http://www.foxblocks.com/calculator/. 

You can also search the ICF forum here for cost analyses of ICF construction.   Cheers  Dave

Very, very rough estimates....

ICF system ~4.00/ft, concrete 2.00/ft, steel 1.00/ft.  For materials alone I think 6.50-7.00/ft are very good estimating numbers.  Of course ft² are wall sq ft and not floor plan ft².

Leonard