We bought this a number of years ago as a backup generator when the power went out.  However, Green Mountain Power up here in Vermont is pretty efficient, and we've only used it about half a dozen times. I would guess less than 20 hours.

We have been careful, however, to run it briefly every few months to keep things lubricated.

As you can see from the pictures, it's in near new cosmetic condition.

We don't want to ship this, so it's local pickup only in southern Vermont.