Yep, looks like he's gone, but for those of you interested I can give you some info.
You can get the cannisters for the Performer 1 touch system at Gasmate's Factory outlet http://www.sitro.com.au/contact.asp
They are a green canister and last time I went there, they were $6.50 each! You can buy the blue Bernz one in Bunning for over $20.00 if you have to, but that's fraking highway robbery.
Secondly, regarding the cost of using it to light your coals... well, you don't use it to light your coals, you use it to light your chimney starter! You turn it on for 20 seconds. Your chimney starter is going like a train... turn it off and your charcoal is well on the way to being lit. Do that, and you'll probably use a bottle every 12 months.
Now that's cheap.