Most of the people living in Australia, always want to have machines which have the capability to last for a long time. In most cases, the manufacturers of high quality appliances tend to offer long lasting products and may also offer warranty and guaranteed performance for most of their products.
But it is also a fact that the performance of a machine or a fixture is always dependent upon a wide range of feature and not just the one or two things that are apparently the cause or may affect the performance of the machine.
You can see that most of the appliance many people, get or buy tend to survive for various different time line, regardless of the fact that they come from same manufacturer and have the same warranty and features the others have.
What happens is that the machines get affected by many factors, like the usage, the power source, the usage frequency and the practices of the user.
In case people have vacuum or Vacuum Cleaners, coffee machines, dryers, or bench top oven in their use, they may use it frequently. And in other case a person may use it once or twice a week. Due to this the appliances which have been used by many people frequently, may get worn out a bit earlier than those which are in use of a single person or he may use it sparingly.
What you should do is that:
If you have a benchtop oven, have some cooktops in a big home, robot vacuum cleaner or a steam iron you may see if they are not working well, you can take such appliances to get them fixed and use it again.
In another case, if you need to replace them with newer versions you can put them into a yard sale so that other s can buy it at a low cost and you will get a few bucks by selling them.
You can also get them to a shop to get them recycled or sued by other people who need their parts.