Google's holiday success was first hinted at by a blurb on its own Chromebook "Buy Now" product page:
Due to the busy holiday season, some online retailers may be temporarily out of stock. If you can't find the model you’re looking for, please try a different site.
And, true to its word, at the time of writing, the Acer AC700-1099 Chromebook (Wi-Fi only) and a few others have sold out from Amazon.com, with similar results on fellow electronics retailers TigerDirect and NewEgg. It's worth noting that it's mostly the midrange models that sell out: the priciest model, the Samsung Series 5 3G model (MSRP $459.99) appears to be in stock at all three retailers.
They're expected back in stock soon, and it's not as though the Christmas rush made Chromebooks into a Tickle Me Elmo-style prize. But with doubts cast on the future of the very concept of a cloud-only netbook, and with Google Chromebooks soon to be available to the search giant's reseller channel, it's an important validation of the product line's future.