Sharing what I found:
For people with deep pockets and don't give a shiznit then you can do this.
For his $15K, all he got was a deckchair and some yellow tape around him to keep folks walking by from bothering him. I can think if a few ways to blow $15K, this is not one of them. I think that having the desktop tiled on each screen was better than spanning the screen across them all. It would have been impossible to see one end to the other and keep all of the action in your field of view.
Amen to that.
Source:
Chinese geek drops $15K to play MMORPG on massive 820-foot screen :: TweakTown USA Edition
I think there's youtube video about this. Just add it with your comments if you want.