This train wasn't Suvidha Special. This was special fare/tatkal fare in which price of ticket is only 100/150 more than the Regular Trains. As of now Flex Fare is only in trains like Rajdhani,Shatabdi,Duronto,Humsafar and Tejas and as far I know only Suvidha Trains are not performing well but rest of the trains their ticket gets booked completely recent case is I booked Chennai-New Delhi Duronto Sleeper at Rs.1500 and it was waitlisted ticket of 25