Nokia Lumia 800 prices as a spreadsheet: how much does it cost?

The Nokia Lumia 800. Photograph: Paul Hackett/Reuters

Are you in line for one of Nokia's new Lumia 800 smartphones running Windows Phone 7.5 (aka "Mango")? Then you'll have to be in it for the long run – there don't seem to be contract-free offers.
The contracts on offer – mainly from Vodafone if you want anything less than 24 months – mean you'll end up paying a total of at least £631 (cheapest total cost of ownership – TCO – on a Vodafone 12-month £36/month contract) and up to £1,104 (Vodafone 24-month £46/month contract).
That comes in £160 cheaper than the cheapest 24-month iPhone 4S, from Orange, according to our spreadsheet on iPhone 4S prices.
Here's the spreadsheet. Generally, Three works out cheapest for a given combination (where it competes) and its unlimited data and texts offerings seem pretty compelling – assuming, of course, that you can get coverage. (Three's site does let you check that first.)
http://www.guardian.co.uk/technology/blog/2011/oct/26/nokia-lumia-800-pricing-spreadsheet