Basic rebuilded with stock parts is about $1500 in parts buy the time your all done. that's if you do all the work your self? Rebuild gastket kit is $350 Ring set are about $140 Bearing all of then are around $150 total for rods and main. machine the block is about $120 depends on were you live.
These munbers are not exact but close. You can see $1000 goes petty quick.
It goes up from there quickly and depends on how much upgrades your putting on.