Available at Hornsby NSW store (108 George Street, 9472 5500), more than a dozen on the shelf this morning - may possibly be available at other stores, but it does not seem to be online. Location: On shelf facing checkout. The helpful checkout person told me the dispenser used to be something like $15, and that it is not a stocked item any more.
This is a repeat of a similar bargain, however with a cheaper price: https://www.ozbargain.com.au/node/134747
Bought a couple of these last year for $2, they are a great gadget…They originally retailed close to $20.