That looks to be self-guided. Given that a groundskeeper costs abour 20k a year in wages to cut grass it might well pay for itself
Getting your grass cut at home doesn't cost anywhere near that... and that lawnmower can't do even close to what a 20k per year groundskeeper can do, there is was more to groundskeeping than just mowing a lawn you know... The cool thing about that mower is that since it's hybrid I bet it runs very quietly.
Depends on what she looked like. Though, if they came in pairs and looked good, $11K might not be too bad.