Microsoft is currently offering Windows Phone handsets from three major U.S. carriers for just a penny each. Through the company’s online Microsoft Store, users can now purchase either Verizon Wireless’ HTC Trophy, Sprint’s HTC Arrive or T-Mobile’s HTC HD7 for just $0.01 alongside a 2-year contract with a smartphone data plan. While the HD7 is the oldest of the bunch, it’s still a wonderfully capable supersized smartphone that we enjoyed very much when we reviewed it last November. The Trophy is Verizon’s first Windows Phone, featuring HD video capture and SRS WOW HD sound, and the HTC Arrive is easily our favorite Windows Phone to date. Microsoft’s penny offers are only good through July 2nd, 2011.