I got a quote for what it would do to rates where I live now, not where I will live.
Right now I'm in Santa Monica. Our crime rate is low.
I will be living in Long Beach, which is not nearly as nice. (Consider that I've been advised not to live north of 7'th street...)
LoJack advertises that it is possible to save up to 33% on your insurance rates. Obviously that depends on car, insurer, and where you live. So it can be worthwhile.
Cheers,
Ben