* In buses, the AC SL/Seat may cost around 1.5 to 2 times of non ac SL/Seat.
* In IR, AC travel is much costlier. ACIII travel costs around 2.5-3 times that of SL.
* If IR keep fares of ACIII economy lower than normal ACIII, then the million dollar question is "to what extent"?? A nominal discount say, just 2-5% (like GR) is of no use.
*...
more... If IR want people to shift from SL to new ACII-E, the discount has to be substantial.