BT's Home Highway ISDN cost me £75 per qtr inc VAT and for that I got two analogue voice lines and a double 64kbs data line. I had three 'phone numbers but could use only two lines at a time. You could double the data lines to get 128kbps but you would pay extra for that.
Add to this £48 per qtr for BTAnytime and you get £123 total Service Charges or about £500 per year. "BT Together" contract gave various other benefits. Only cost of 'phone calls to add to this.
Not a bad package for a country dweller.
Past Tense now as I've just upgraded to ADSL Broadand and I'm well chuffed. A download that took 10 mins this morning took 32 seconds this afternoon! (That's 1.8Mb of McAfee weekly upgdate.)
Email/msg me for more details if needed.