Van Hap I believe is the track photographer, no one else allowed to shoot there. From what I've seen in the past, I'd save my money.
Van Hap is the exclusive track photographer. I'll leave opinions out of it. http://vanhap.com/imgs/2010/May/05-09-BW-WERA
But I'm a photo editor I get paid for my opinion. Clicked on the link to take a look, same as it ever was........