About 150 lbs.
to a dog 1 million dollars to u squat
There are too many variables. You need to contact a local agent or agency and ask for quotes.
about $15. if it isn't it is 25 or 30 dollars
If you live in England your local fire station will send someone round to install them for free, you don't even have to pay for the alarms them self. If your buying them in a shop they will cost...