So far, if your in the UK, the Bold 9780 is only available from Vodafone UK or sim free through sites like Expansys or Clove Technology. Now though, if you're with T-Mobile or Orange you can now rejoice as it is now offered on those networks.
T-Mobile UK Plans
You can get the Bold 9780 free from £35/month on a 2-year contract, this tariff includes the £5 BlackBerry Mail Booster, which is just T-Mobile's name for the BIS service. You'll also get 600 mins and 500 texts a month. If however, you want to pay a less each month, the lowest tariff the Bold 9780 is available on is £10/month. The device will cost £240 and you'll get 100 mins and 100 texts per month. This tariff also includes the BlackBerry Mail Booster. This is also a 24 month contract. The BlackBerry Bold 9780 is available in Black or White through T-Mobile
Orange Plans
Similar to T-Mobile, you can get the device free from £35/month on a 2-year contract. This will give you 700 mins and unlimited texts each month, as well as unlimited email. The lowest tariff is £20/month for 2-years and you will get 100 mins and unlimited texts. The device will cost you £149.99 on this tariff. The BlackBerry Bold 9780 is only available in Black from Orange.