Thanks - that's pretty much what I was offered. Whether you think it's worth it is entirely a personal call. I need two additional door contacts and at least 7 more PIRs in order to cover the ground floor of my new place. Starts getting expensive!
Sorry - full installation and monitoring - just alarm, or alarm plus cctv plus smoke detection? How many door contacts? How many IR detectors? Monitoring alerts just you and a key holder or that plus OB? If it's the full monty, that's a very good price...