whats a vallient boiler to buy £800 upwards ?
then you need someone to fit it..
Back in the 1990's they sold lots of Vauxhall Cavaliers, however I can't recall the last time I saw one on the road
Prima 9 was about around £56 +vat back in the 1990's the ones I fitted are all long replaced.
Unless your retaining your alarm to match up with your CRT telly & fake teak hifi, I can see no reason why you'd want to keep it.
However should you find someone, to "mot" your alarm as one off job, request they supply & complete a BSIA logbook (inculding the NCR reading pad in the back)
If I was hard up & needed to fill hrs I'd want £5 + an extra 1hr over a visit to do this