Appearently you don't have to pay duty on mobile phone's, its just the UK charge adapter and because that comes to under £9 you don't have to pay it.
It's just the VAT @ at 17.5% which is calculated by customs on the exchange rate at the start of the month.
Without the UK adapter (which is just an adapter, you can just pick one up from a travel shop) It comes to about £450 (VAT calculated on next months exchange rates seing as when it goes through customs it will most probably be June not May.)
The N1 is the better phone software wise from what I've seen. But tbh the desire beats it with the optical trackball and with abit of luck Expansys should post mine on Wednesday