I've had a quote for £50k, 2 connections, nearest pole 900m away along a country C road.
And one for £30k, 2 connections nearest pole 500m away going over private farm land (assuming the land owner is OK with it + solicitors fees etc).
No experience on the subject but reading the thread those numbers seem about right.
Apart from negotiating the quote down as the poster above did, not sure there are any other alternatives? Apart from going off grid!