Never mind the prices, wait til you experience the service!
The prices are very much secondary with BT- what you're really paying for is quality of service.
When we moved in to the house my parents had been staying in- which had working broadband - we wanted to move the bill into our names and keep it running. Over the following two months BT routinely connected the internet for a couple of days then disconnected it and told us that the account didn't exist, they would whimsically put a stop on the account and then refuse to remove it. Every time the broadband was disconnected, in spite of the fact it was disconnected as a direct consequence of their immense bumbling incompetence, there was no imaginable way they could get it reconnected in less than ten working days. We went through three different telephone numbers before we were allowed to keep one, meanwhile the broadband account was associated with other numbers that we had been assigned and then inexplicably weren't assigned any more.
Every customer support person we talked to really wanted to help, but it appeared that none of them were allowed to talk to each other or to any other departments so every single phone call put us right back at square one.
Finally we got the broadband running on the right phone number and then it was cut off again because we had only sent them the direct debit details THREE TIMES and they had managed to lose them all.
I'll just point out that the line was working, with fully operational broadband and with nothing wrong with it right up until the point they started to "help" us, so there is no way that this was any kind of problem with the line. My personal view is it was a problem with an organisation who misidentified Kafka's "The Trial" as a how-to manual for customer interaction.
I honestly believe that BT offer the worst possible user experience and the most staggering technical and organisational incompetence I have ever been subjected to. A few years ago I was an NTL customer and thought it could get no worse, but BT really came through with that.
I'm sure investing that heavily in pure, high quality distilled idiocy cannot be cheap.