I'm glad I was able to get one of these. My wife really had her heart set on getting one in October when we were at WDW and they were nowhere to be found.
TIP... if it says "out of stock" on the website, try refreshing the page.
After I bought one, I was talking to someone else who was seeing "out of stock" and I was still seeing them as available. I refreshed the page and then it said "out of stock" for me too. But then I refreshed again and it showed as available again.
It might be that people have them in their cart, but if they don't check out they go back into the pool. I don't need a second one, so I didn't experiment to see if I could complete a purchase after refreshing, but I'm going to assume that if it let's you add one to your cart, you'll be able to purchase.