Not very. You just need to know the trick which I didn't and be quick.
As soon as you alight from Nilagiri, run to the left side of the same platform. The queue will be right there beside the UR coach. DO NOT go to the ticket counter. First they'd issue you a token and THEN you need to go buy tickets. If you do this right, you'd get it.
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I...
more... went to the ticket counter on the other end of the station only to be shooed away. Then I came back and joined the queue. And after all this mess-up, i missed the "Super 40" by 10-12 odd people. This should give you an idea.