indigenisation of real time aircraft tracking system rtats , one-time development cost , generation of specifications and design development , cost of tooling/dies/fixtures and such other one time investment , cost of qualification acceptance/life cycle testing charges ( soft and qt ) , cost of each prototype as per description , cost of labour ( per unit/piece ) , cost of material ( per unit/piece ) , rework / scrap coverage , overhead expenditure , any other factor if any , profit margin , total cost of prototypes ( sum of sl no 2 . 01 to 2 . 06 ) , total cost for required number of prototypes [sum of ( sl no 2 . 01 to 2 . 06 ) x total number of prototypes sought ]