This week, I share an advertisement from its first season of operation where a day pass was available for just $10.95. It is equivalent to $27.95 in today's money according to the RBA Inflation Calculator. Good value even though you could only visit on a Saturday or Sunday.
Source: Australia's Wonderland. 1986. "Hurry! Only 2 Weekends To Go." (Advertisement). The Daily Telegraph, May 29: 12.