What exactly is your point?
Because it doesn't include some cheap shit chinese "H beam rods" it means its too dear?
I'd would rather stock rods and some chinese no name rubbish.
Rods aren't free no matter wether they are stock or aftermarket they all need to be checked and possibly re-sized or final finished.
They still need to get ARP bolts fitted and then resized and then small end clearance checked, which all costs money.
Then the block needs to get bored and honed, piston to bore clearance set, ring gaps hand filed.
Crank needs to be measured linished or possibly ground under size, polished, plugs drilled and grub screwed so it can be cleaned properly.
Oil pump stripped cleaned clearance checked and re-assembled.
Block cleaned and new core plugs fitted.
New main and rod bearings, new main bolts, seals.
Then final clearance measurement and assembly.
Where do you see any way to do that job for under $4200?
IMO that's a pretty cheap price to begin with.