I'm not. I'm assigning a 15y lifespan, building in maintenance into the running cost and assuming we just run it into the ground; buying another every 15 years.

I'm not. I'm assigning a 15y lifespan, building in maintenance into the running cost and assuming we just run it into the ground; buying another every 15 years. Year 1 is so high in the in-house models because that's what's paying for the machine.