Small Print: Offer available for new sign-ups to iPhone Plus between 25th October 2011 - 25th December 2011. Sign-Up to iPhone Plus at £15 per month and if you're not happy for any reason - example: you don't get any bookings or the site hasn't added any value to your business then you can cancel service and get your money back - no quibbling. You must request your refund before 1st January 2012. Max. refund £30.
PS, those who have signed up for iPhone Only over the last couple of weeks can upgrade to iPhone Plus and take advantage of this offer.