I bought this alarm 8 months ago fo£180. It's been brilliant. Not one false alarm. Easy to set up and use and would highly recommend as a deterrent. (Not as a insurance reducing alarm). Usually £200 but I noticed that this is £149 on Tesco with free click and collect.
Also this price on Amazon as well with free delivery.
Please don't turn this into a debate about getting a wired vs wireless alarm.
I highly recommend this as an owner.