Yes..best way to install is with pneumatic coil siding gun.
Check with your local Home Depot Pro Desk and see if it is available via special order. You could also check the manufacturer's web site.
It has to be painted
Sorry, you cannot specify a primer color.
External factors are affecting material and production costs. Check on line or contact your local Home Depot Pro desk for current pricing.
Q pneumatic nqil gun should be used to avoid cracking the boards
You will need to measure your height requirement. You will also need to determine what your stud spacing is and if they are consistent. if they are not on a 12, 16 or 24" spacing, you will incur some waste and will need to figure that into you material needs.
Home Depot carries Hardie trim boards that are specifically designed for the trim. I would check into that first.
I am not aware of a store that would cut this material for you