I bought this lawnmower used locally for a fifth of the new price. When I got home it was dark, but I wanted to test it out anyway. With just the light from my front porch, I walked straight through the middle of my yard and left a clear cut line behind me. It was so much fun, effortlessly mowing, silently, and without gas / electricity, that I just finished my whole front yard in 10 minutes. Why any other type of lawnmower was invented after this simple design is beyond me - this is absolutely perfect. The only maintenance I can foresee is that one day I might have to sharpen the blades. BIG DEAL!