In August-September, we had them all over Nashville and they would sit on the shelf for at least several days per shipment. I ended picking one up at Walmart on a whim. They only started getting rare around here in mid-October.
In early December I got lucky and found another one at Target and put it on Craigslist. Surprisingly, I only had one person requesting it, so it looks like demand is not as great as it once was. My guess is if you really want one, finding one should not be too hard. Check your local Craigslist and you can get one cheaper than Ebay (though more than list); they're running around $325-375 in Nashville, and I've seen a couple of opened ones for $275-300.