For those who only need a few boards, rpilocator has been a great resource. Adafruit typically releases a handful every week on Wednesday I believe. (Check out rpilocator's Twitter feed as they typically give folks a heads up before the Adafruit drop: @rpilocator) They do limit 1 per customer per month though..

Also backordered a 4GB version on Digikey and it came through only a week later. (Good timing on my part I guess!)

It took a few months to get to this point so patience is the name of the game for sure until the market cools off a bit.