Technically the opposite is true. As a rated pilot you are bonded for the training you receive. As a non rated DEP you (FO’s) have to front the cost of the type rating up front costing the company nothing. As a NTR DEC the type rating fee is removed the salary each month for 36 months. Again costing the company nothing. Granted it takes longer to train a NTR pilot but being cheaper?? Not in this day and age!