Pawever Pets 10L Automatic Pet Feeder + Automatic Pet Water Feeder $59 Delivered (Was $139) @ Kogan
Feed and water your cat automatically with this machine. It's big, it holds a lot of food, and it is also very noisy looking at this video of the same machine with a different brand on it. I've been wanting these things for a while now and these look as good as any other for this price. This is probably good for fat cats that should be on a diet. The automatic waterer is just a big inverted jug but I've been meaning to get one of those too.
Also free express delivery with Kogan First.