I bought the hand crank one at walmart for $20.00. I tossed the hand crank in the trashand threadeda bolt in place of it and use my power drill w/ a socket to crank it. I bought it 2 years ago and have butchered 3 deer with it so far. Still works great and I saved alot of $. Even if I replaced it every year I think I'd make out pretty well. But like I said, I'm on year 3 right now and it's still going strong.

If you already have a power drill it will only cost you $20 plus the cost of the bolt (unless you already have that too).