Easy to buy, prompt delivery from the UK(?) to Oz.
About the product:
Really good alternative - has at least doubled my phone's life before it needs a charge. Cover supplied for the back of the phone fits well enough (although it's not water/dustproof) and I really like the little stand that's incorporated with it. I thought it might make the phone a bit too big for comfort when using/carrying, but I really don't notice the difference. For anyone with a Samsung Galaxy S2, I would strongly recommend this upgrade.