I think it depends on where you want to live, some areas are more expensive than others. The standard of construction of the building you want to live in and whether you build it or buy already constructed. Basically its the same in principle as living anywhere.
I think its the initial setting up that costs the most obviously after that then its up to the individual on the standard of living you want to have. Generally I think living will be half of that here in the uk. But as mentioned its going to be very difficult to put figures to this.
I'm looking at shipping all our gear over when we move in 18 months or so. a container is £3000-4500 depending on size, £1200 or so for the dog, £1400 ish flights, then finding a rental property for a start I'd say 8000 - 10000 quid to get over there and set up. After that its all about finding your perfect place to live.