answer:(1) It’s never going to work as well as it does in that video. For one thing, did you notice that they keep cutting away to a different shot? They’re only showing you the times it worked perfectly and not all the times it failed to work properly and the guy using it cursed it heartily before throwing it down, kicking it repeatedly, weeping in frustration until he had a smoke and recovered his patience, then went back for take two. (2) You’ll probably get better exercise from an axe. And unless you live in Siberia, I doubt you chop enough wood for this to ever pay for itself. (3) If you have a lot of discretionary income and a large garage for storing toys, then by all means buy one. Otherwise, no, it’s probably not worth the investment.