I got an introductory offer 18 months ago and got the XL package in the 3 for £30.
That offer ended a few months ago and they started charging me the V+ fee.
I rang and complained saying that as I had paid £150 for their V+ box, I was confused as to why I also had to pay a fee for using it, arguing that Sky don't charge their customers extra for their Sky+ service and also that I had only bought it for it's HD capabilities. I asked why they had advertised that they would have loads of HD channels soon and it has been some 18 months yet still I only have 1 and thats a preview channel!
They stopped charging me the monthly V+ fee and upgraded my service back to XL.
They also said that Sky held the rights to broadcast all the HD channels exclusively for however many years, but that was coming to an end and we would soon be having lots of HD channels added.
That was 3 months ago ... i'm not holding my breath!