I will let it go for $4000
This post needs a lot more detail: serial number, running/not running (today, not "when parked", preferably backed up with a video), location, your location, any accessories other than what we can see. Judging by the single photo, this unit has not run in a long time. And checking on facebook, this unit was sold in Fayetteville, TX about 8 months ago in a non-running state for $4k.