6.2 w/Banks Oil Leak at top of engine
 

Hi everyone, I'm brand new.
I've had 5 diesels before and I'm looking at buying a truck with a 6.2 Diesel with a Banks stock turbo.
It has lots of power and feels great but I opened the hood when we came back from our little drive to find puddles of oil on the manifold (?) on the top of the engine under the Banks cover. It looks like it might be leaking from the turbo, but I'm not sure that is where it's located. What do you think and what would it cost to repair?
THanKS!!!