Nexus 6 buyers in the US (not available in Canada, yet), camping out on the Google Play Store to purchase the largest and most expensive Nexus smartphone yet, were suprised and dissapointed when stock sold out in 6 seconds. Yearly demand for Nexus smartphones has traditionally been high, specially when they are first made available. This is because Nexus devices sold unlocked at Google's online store are usually way cheaper than if purchased in stores or through cellular providers. Nexus 6 will likely be available through various carriers in the US in the coming weeks as well as other regions, including Canada, sometime in early November.
Source: Kirigu.net