This is true, but I really can't see it costing as much as 1km of 70mm SWA + 35mm CPC (or 3c 70mm)
I could. I imagine just for a crew to dig up and repair a cable must cost £££
I was involved in a similar job last year. The transformer and pole was on the land (a small holding about 1/2. Acre ) to drop down and install a 100a PME cost 7k. Approx 20m from pole to cutout.
I would be happy to be proved wrong though.