No reputable molding company charges for quotations on parts or molds. These are provided free of charge, without obligation. Quotes are generally supplied within a week, and are good for 120 days, after which they will be re-quoted. This time period is placed on quotes because of the volatility of material prices. Plastics are mostly petrochemical products – for a quick idea, look at gasoline prices; a pound of common engineering grade plastics generally equals the price of a gallon of gas!