I had one from B&Q in the summer and noticed the other day that it has gone down to £14.99
I paid £17.99. It's a fire angel one and is quite small and comes with the battery.
1 thing I have noticed is its surprising how my van filles with carbon monoxide from others exhausts when Im on the motorway with the front vent open :shock:
It will also bring home how risky it is tuning your engine in a small garage is as the alarm goes mental after about 5 minutes.
recently had an overhaul and the mechanic had the roller down and garage closed... i thought i was gonna pass out with CO but he kept on soldiering on, i had to leave for fresh air i guess he was immune to it. :lol: