If upfront cost had been a barrier to entry for potential Windows Phone 7 customers, that problem seems to have been solved by Amazon. As part of a limited-time sale, the Web retail giant is offering a smattering of Windows Phone 7 devices on AT&T's network for 1 cent each.

Included in the sale is LG's Quantum, the Samsung Focus, and HTC's Surround.

Of course, buying one of these requires a two-year contract, but previously most of these devices had cost $100, even with price cuts from earlier this week on the Quantum and Focus. Amazon's 1-cent sale ends on January 17.

(Via Boy Genius Report)