After the Nexus 4 was only available for a short time in Germany - which led to general displeasure among potential customers - a second batch is now available in the USA. At least this is announced by the Google Play Store according to theverge.com for 12:00 PST on 27.11.2012 How long the stock will last this time is still open - as well as whether the LG Nexus 4 will be available again outside the United States.
Google offers a lot of performance with the LG Nexus 4 (after all, a quad-core SoC as well as 2 GB RAM are in the 4.7″ device) for little money: the 16 gigabyte version was offered for 349 euro plus shipping. But: Google seems to be overstrained with the demand - or is deliberately cutting back on the offers in order not to pay too much on top and not to put too much pressure on the other manufacturers.
Update: According to a mail exchange with the Google Support, which was published on Stadt-bremerhaven.de published the Nexus 4 should be available for order again by December 6th - Santa Claus. The support team also considered the suggestion to accept pre-orders for the LG Nexus 4 to be reasonable. Whether it will actually be possible to pre-order a device, however, is still open. However, it is still advisable to regularly check the Play Store to see if the Android smartphone is already available again.
Update 2: Starting today (05.12.2012) 17 o'clock the Nexus 4 is to be Play Store can be ordered - Google has apparently brought forward the schedule. This reports AndroidPit.com. And you can actually order it at the moment, with delivery in the next 1 to 2 weeks according to Google.