It seems as if the smartphone is currently available from the T-Mobile website here, however the fact that it sold out so quickly perhaps suggests that HTC has not correctly anticipated just how popular the HD7 is.
To be honest the stock shortages surprise me a little as there has not been much hype surrounding the HTC HD7, however I quickly just checked T-Mobile’s other high-end smartphone offerings and alternatives include relatively old devices such as the HTC HD2, BlackBerry Bold 9700 and the T-Mobile myTouch 3G.
Did you decide to buy the T-Mobile HTC HD7? If so, are you regretting your decision?
Also See: Expected HTC T1H and Nexus 9 differences