General range for KIT is $900.for small loader buckets and more for bigger buckets.
Then you'll have to allow for aux. control valve, hoses,fittings, install labor.
So, I'd guess you'd have $1400. approx by the time is installed.
We ( as well as all dealers) can work with you to do the complete installation or provide many tips and short cuts for ya.
This item is an item that many owners can do the installation themselves.