The last time the "Limited Units Available" message appeared on the Core product page was on Thursday, June 2, 2016. I remember, because some speculated that we would not be able to buy the Core until after the weekend, which turned out to be true. I was able to buy a Core on Tuesday, June 7, 2016, at around 1:00pm according to my receipt. My time zone is UTC+2:00, Kyiv, Ukraine. Also, my credit card was not charged, but there is a "pending transaction" from Razer and my order status is now "In Procress."