I have a long time residential customer who has a water problem. I met the county water inspector and came up with the plan that should work. I estimate that I need @ 3 runs of 150-200 foot of 6" and 1 run of 8" pipe. The topography of the property will help the runoff from the pipes once it is routed to the correct area. The present problem is compounded by idiot neighbors blocking the water drainage spill-off area. What is a good price per linear foot? The client will pay what is asked; but I want to be reasonable and not rip them off. I found pricing anywhere on the threads and the internet from 7-30 a linear foot. I'd like the pricing as a turnkey. There are no rock or soil issues - easy digging.