The HTC One can be purchased in the U.S. beginning today.
The new smartphone from HTC will be available in Verizon Wireless retail stores beginning at approximately 1PM Eastern time. At the same time, the One will go on sale through the web sites of AT&T, Sprint, and HTC itself. T-Mobile is not offering web orders today. The One will not reach AT&T or Sprint retail stores until April 11, but can be ordered online today for delivery within several days. The One will become available from T-Mobile at some point in early April.
The device retails for $199/$249, depending on the carrier, and has a full retail price of $649.