No telling if this is a permanent deal or just temporary, but AT&T is now heavily discounting the LG Quantum, dropping $399.99 from the retail price making it basically free. Of course you still need that 2-year contract thing to get that price and it looks to be online only (though we're sure you could talk a store into matching it). We've seen third-party retailers offer WP devices for a cent, but not often has AT&T done so directly. (AT&T last dropped prices in early January to $99)
While the Quantum is not the favorite Windows Phone on the market, with some considering its design...less than exciting, the keyboard is pretty top notch and the build quality is just fantastic. Combined with LG's offering of free software in their store, plus great OEM apps (see here, here and here), it's actually a great phone for the text-heavy messenger. (Confession: my Quantum is my default device, there's just something about it that I dig).
Update: Reader RayWP7 lets us know that HTC Surround is also going for $0.01, right here.