How to buy the Nexus 5 in San Francisco?

Google's Play Store doesn't sell devices in my country, and in retail the 16 GB Nexus 5 starts at around 500€ ($690). Anyway, I'm travelling to San Francisco next month, and plan to take advantage of USA's ridiculously low electronics prices. But how would I go about buying a cheap Nexus 5? Do retailers have similar prices to Play Store? Is it possible to buy from Play Store and have the product delivered into a hotel? How to do this?