are you doing the tear down and put back together yourself at all? labor is a HUGE part of the pill, usually 30-50%. if you caught the oiling problem quick enough, and it didn't spin a bearing or damage too much, you might be able to get away with a simple hone job and new bearings.
make damn sure you go thru a high quality shop, and take some with you knowledgable upon pick up to make sure all work paid for was done and done right. I made the mistake of trusting my engine builder and he didnt do half what i paid.
but anyone, to give you an idea on cost. around here, most shops are in the following range. these are assuming you have the thing taken apart and they just have to do the machine work
75-85 to hot tank and prep it
50-75 to replace the cam bearings
150-300 to deck the block
15-80 to bore it (depends on how big and the shop)
150-300 to line hone the mains
now if you replace/ upgrade rods,pistons etc or just want to internal balance and hone the crank if it needs it
75-100 to hone the crank
100-300 to balance depending on how out of balance it is.
then you get into parts.
cam bearings for a 440 can range from 25-100, I recommed Kings
main bearings range about the same, 25-100
then you have you gasket set, a good one is about 150.
Course this is all assuming no major damage to the rotating components.