In reference to R19.P1.T3.FIN_PRODS_HULL_Ch12:Topic:Box Spreads :- The Payoff for a Box Spread at any given point is (K2-K1) ...I do understand that....but what I am missing is that shouldn't the payoff also should also factor in the cost of the Bull and Bear Spreads...? that is the payoff for the Box Spread at any given point should be (K2-K1) -Cost of the Bull/Bear Spread? I might be missing something here...would be very grateful for any help/insight on this.... For eg: As the price increases beyond the K2, the P/L for the Bull Spread is = (K2- K1) -Cost of the Bull Spread. Similarly, As the price falls beyond the K1, the P/L for the Bear Spread is = (K2- K1) -Cost of the Bear Spread. Does by "payoff", we are referring to the "Value" of the Box Spread at any point which is (K2- K1) and the "P/L" from the Box Spread at any given point would be (K2 -K1) - the Total Cost of the Box Spread..?