It was a pain in the butt finding one by myself. 3rd party sellers were offering it on mark up on Amazon and Ebay.
I used Now In Stock to locate one last month.
http://www.nowinstock.net/computers/monitors/asus/I got a notification that NewEgg had one, at around 12:30am on a Saturday, 11/15/2014. I logged on and was able to order one at a discount of $799.99 US. It got delivered the following week. So far it works fine. I'm not experiencing any of the issues other people have been experiencing. Overall I'm pretty happy with it. The other monitor I was considering was the LG 34" 21:9 monitor. I was looking for a monitor that would plus gaming.
I've noticed there are a few other G-Sync monitors out there.
If you want to play it safe, you could still get your new custom rig, and hold off for a while before getting this monitor.