@Melonlity -- The cost of HardiPlank may deter some people, but if you do the math you can see that the cost comes out OK. If HardiPlank siding lasts for 50 years or more, that just means that you will not have to replace it as often as vinyl siding, wood siding or just about anything other than bricks.
Think about that. If you were to install HardiPlank on your house today, there is a good chance that no siding would have to be applied again in your lifetime. That is a powerfully effective marketing tool.