Cause An “Avalanche” In Your Own Yard

Well, not a real avalanche, but sort of an avalanche...coming from your roof.  With all of the snow we've had here lately, this tool would certainly come in handy.  Where has this been all of these years?  I have not seen anything like this in the stores around here, and it's sold out online.  I'm surprised the company that makes these, is not working some serious overtime hours getting these off of the assembly line.  If anyone has one, I would be grateful if I could borrow it.