As per my understanding
Prem trains tkts fare varies from ticket to ticket but suvidha tickets varies depends upon of %of bookings
Like for a train having 300 Tkst, first ticket booking varry from 2nd tkt booking and 10th ticked booking and final booking will be at peaks,but in suvidha 25% of bookings will have one slab and next 25% will have another slab and final slab will be same as Prem i guess. as Railfans wont satisfy in trains and railways wont satisfy how much fare hike it has.
I...
more... may be wrong,experts can correct me.