Question:
I was ordering some horn strobe yesterday for a fire system and the guy at the distributor told me he has guys buying them for burg sounders

Answer: -The only advantage I can think of, is the low current draw. I'd think the price would be pretty much the same for a burg strobe/horn. Maybe it was started by a DIY'er who got it at 30% above dealer price from an on line store.

-Probably so but I imagine the fire marshal wouldn't be too happy about it if they get a call from a neighbor saying there's a fire alarm sounding.