Its only clerical charge which will be deducted (not IRCTC/Service Tax/Bank Charges) as Rs. 745 is Pure Fare (the same which will be collected from PRS) & hence no extra deduction over it but Clerical Charges!!
Charges Over & above Rs. 745 are already not going to be refunded & hence no dual deduction over it!!
PS: Checked now & found WL/RAC deduction as Rs. 30 (while i got Rs. 35 deducted for 3A/2A/)....:(