Well, YEAH! I'd love to have one too, but those darned things cost as much as a car! And knowing me, I'd mow the fence down with it. You'd have to have a 40 acre field just to turn it around, but boy would you get through mowing in a hurry.
Yes, they are expensive and that is why I do not have one yet. And wouldn't you know it, a relative found a used one at a farm auction. He bought it for $250 dollars. Argh!