I'm local, and interested in one of these, but I don't know much about them.
I have carpeted stairs to the basement, with hardwood at the top. Will this work on the carpet stairs and do I need to worry about it marking/damaging the top hardwood step?
Also, how old is the unit itself? Does this matter? Parts of it look rusty in the pics. Not looking for a show piece, but trying to understand condition and what's relevant.
And I have no perspective on whether 20 hours on the battery is like new or one foot in the grave. I'm guessing replacement batteries aren't cheap?
Anyone have perspective on all this? My wife has been hounding me to get one of these and this seems potentially like a decent local option.