YOu can expect about $1K for the case and $500-800 for the crank. May consider getting rods re-bushed and / or balanced, cam ground, new or O/H'ed lifter bodies, plugers, etc. Some do NDT on gears. You should definately have the crank gear tested and measured, as they can wear in some cases and is the mostly likely part damaged from a prop strike, excluding bent cranks, which often can be straightened. ASI lists all of their services and prices on their website and should be a good reference for you.
Cyl O/H is only a few hundred less than new cylinders.
Larry