I hope it won't be too expensive if it comes to UK. Although I think for my first reader NT model will work fine.
As of books, I checked my favorites in UK and US store and UK is 1-2 pounds cheaper (book prices about 2-5 pounds so it's a big percentage)
The only disadvantages of being in UK store are some lost services. I know people who like the same books as I and lending books would be very nice. Library thing could be useful too. I can live without games. I also might like offers - if they are useful as some say - but they aren't available too.
If anyone knows some other disadvantages not mentioned in this thread, please point them out.
In US store the book costs $10 instead of $6-7. Pricing isn't encouraging