Thanks, no ground wire, forgot to mention, this is service feeder, no ground wire.600 kcm copper is about $20/foot.
So about $250 per foot for the wire, or a total of maybe $25,000 for the wire.
What are you planing to do for the ground conductor? Will need to be a full sized ground wire in each conduit.
2/0 ground X 300 feet is about $5/foot so another $1500.
4#600 plus ground will take probably a 5 inch PVC conduit so add 500 feet of that. Maybe $20/foot, so $10,000.
Trenching and filling is probably about $100 a foot by the time you get done with it. Maybe $10,000 contracted out.
So close to $50,000 in parts and trenching not counting your labor and markup.
Just my guess.