340 Block Cost

I have the opportunity to buy a 340 block off a buddy. It needs a sleeve in cylinder 8 however. The goal is to machine & build this engine stroked to a 416. Any idea what the cost of the block should be if it needs a sleeve?
About the same as a existing .020 or .030 over block would go for. Imo

Standard bore blocks get the premium, the rest fall into how many rebuilds are left.