Yes, $15/kg due to the cyclone in Northern Queensland last year
that wiped out most of the banana plantations. For a number of
months we rarely saw any bananas in the supermarket shelf and if we
did see them, they were usually expensive and not of the best
quality (a little bit bruised).
I have never missed bananas so much in my life.... during that
time, sometimes I would spoil myself by getting myself 2 bananas
and it would cost me about $5, ouch! 
Most
people did the same too, just bought one or two instead of a big
bunch.
