Just went to Woolworths (@The Glen Shopping Centre Melbourne) today, they are on sale for $40
I bought a similar one before from Bunnings for $70 and it's about $100 on ebay
$69.95 bunnings
http://www.bunnings.com.au/gasmate-deluxe-double-butane-port…
$98.95+17.99 ebay
http://www.ebay.com.au/itm/New-Gasmaster-Portable-Butane-Gas…
Sale is not limited to just The Glen because they had them at Springvale Woolies on Sunday