Mike's prices are good but on the high side.
Im in GA. and the machine shop I use charges
Bore and hone an 8 cyl engine block $100
Sonic testing $75
Line bore $75
Line hone $40
Block cleaning (hot tank) $55
Install cam bearings and freeze plugs $45
thread chasing $25
block milling $75-100
head milling for v8 engine $75 to 110 for flat mill, $225 for angle mill
Polish crankshaft journals $40
Turn/machine crank journals $100
Machine/resize rod big ends $45
Plus of course parts, then labor to build the engine. That labor will be in the $400-1,000 range.
I'm an engine builder myself, but do not have a machine shop in house so I out source my machine work and charge customer what I pay for machine work.
For a common engine build, I charge $600 labor, Plus machine work and parts