Just noticed that with the extension of Myki ticketing to key VLine services during the next month a number of stations become zone 2, with cheaper fares: Bacchus Marsh, Clarkefield, Donnybrook, Heathcote Junction, Lara, Little River, Riddells Creek, Wallan and Wandong - http://www.vline.com.au/fares-and-tickets/tickets/commuter.html . Probably not a huge saving in cash terms but may have a psychological effect.