Well CH is not expensive- you only have to buy it once.. But- I realize this is not 100% universally true depending on where you are in the world.. If there is a serious lack of CH availability, etc.. But I can tell you that this stuff is rock solid, and as dependable as the sunrise. Great software, great support. Highly recommended.
If you can get it, and it's anywhere close to the cost of lesser brands- it more than makes up for it with years of service.
So here in the US, for what it's worth- Replace anything else 1 time- you've easily exceeded a price of a full set of CH..