Well, I got it on an Orange contract upgrade, so it was cheapish for me as an existing customer - £15 up front payment, and £27 per month with 500 texts, 600 minutes and unlimited landline calls.
For new customers I think it's available on £35 per month with an up-front payment of £97.50, as that's what I saw when I was looking at Orange's upgrade store.
I don't know if it's available on other networks, haven't seen it anywhere.
Edit: Pyro it's the Samsung i8910 HD aka Omnia HD. Can't believe I didn't put the model name in anywhere *slaps head*
Edit again: @Kowenicki: Yes, it has an app called RoadSync which syncs with Microsoft Exchange (please bear in mind that I don't know what that is exactly, I'm just reading from the app details...). But yes is the answer.
