There are
several high-end Lefty hubs, which could then be laced to any rim you want. For many racers with the budget, that means Enve but there are a few other options as well. If this is going on your 2009 Scalpel and it's a 26" bike, you better get on this quick as high-end 26" XC parts are definitely on the endangered species list.
Although you might also just buy used. You'd want to be very cautious about that, and inspect the rim / wheel carefully before mounting a tire, and of course be sure that you have options to return it.