As stated in title - at around $25 this is by far the cheapest I can remember seeing them in a very long time. I have no idea about the quality of them but they would have to comply with safety standards. For those likely to want to do the swap and go type thing, this is by far the cheapest way of buying into the scheme (as opposed to buying a filled bottle through them.)
Ever been in the middle of a bbq and run out of gas? You can be sure this will never happen again by having a second (filled) bottle on hand. In true ozbargain style, this means you don't actually have to fill the bottle before it runs empty "just in case."
For the creative souls out there who look for gas bottles to cut up for bbqs, outdoor fireplaces etc, here's a chance to get one fairly cheaply that has never had gas in it to have to worry about sparks etc when cutting. (if you have no idea what I am talking about but feel the need to know, check out ozpig)
Then go to Masters as they have $20 swap and go's.