Jamie,
Before you cough up the cash, take note: recent experiences by one webmaster and much further discussion have shown definitely that this 47.00 per year is a paper map copying license, and literally only that. It does not allow images captured from mapping software, and nor does any other generally available license.
I've summarised the current situation here
To go directly to the conclusion, look under 'State of play'.
Edited: 27/09/2007 at 17:55