I remember this video when it was first posted back in 2009. The guy says the grill cost about $1650 new. About a year later, the price jumped to $2000k. A short while later when Weber came out with the S-670 (10 burner model), the price jumped to $2500. I was able to buy one this year, brand new at Home Depot for $1200. You see these show up used from time to time on CL, but they are rare and usually beat up pretty good.
This thing is a beast for sure. When all 10 burners are going at the same time, it is putting out about 103,000 BTU's. It can do everything, however it is still no match for a Fire Magic gas grill. Those cost about $12k and have features like a power hood lift operated by remote control.