Actually this deal started Feb 1. Similar to last year's deal.
I did a quick check and some trip and date combinations are sold out.
Conditions
Adult and Child economy class seat $50.00 one way - $100.00 return.
Available to full adult & child fare passengers only, no further concessions apply.
Available for single and/or return journeys.
Cannot be used in conjunction with 'Children pay $1.00' Fare.
Can be used in conjunction with the ‘Family Fare’.
Valid for travel from 1 February 2016 through until 30 April 2016 inclusive.
Available on NSW TrainLink Regional train and coach services.
Reservations made on day prior to travel must be paid for and ticketed at time of booking.
Changes to the journey after the ticket has been purchased are permitted; however, the applicable rail fare and fee will apply when the ticket is exchanged.
Tickets are non-refundable.
No break of journey.
Subject to availability.
The $50.00 fare applies to travel wholly within any of the four regions covered by NSW TrainLink's Regional services i.e. North Coast, Southern, North West or Western regions including any guaranteed connections which appear in any of the printed regional timetables - e.g. Dubbo to Melbourne (DBO-CMD-MEL CLK792/623), Moree to Grafton (MRZ-GFN CLK142).
If the journey crosses from one timetable region to another, e.g. Albury to Grafton, the fare calculated will be $100.00 one way i.e. $50.00 Albury-Sydney and $50.00 Sydney-Grafton.
Customers who present a ticket booked online at a sales outlet and wish to make a change to the travel date will be charged $5.00 plus the applicable rebooking fee.
Are they still using the crappy ol' XPT trains from like a decade back? Where the average speed is something like 80km/h?
edit: looks like they still are — 11.5 hour train ride Syd to Melb.