Online retailer Amazon dropped the price of HTC One to $ 49 on 2 -year contract and is applicable for AT*T and Sprint variants. This is a $150 drop over original price. Also keep in mind that HTC Corporation is offering $25 Google Play credit for all HTC One purchases, a limited time offer valid until July 15th 2013.
Hit the below links if you plan to buy one of these phones at this price.
AT&T HTC One -Silver
AT&T HTC One -Black
Sprint HTC One -Silver
Sprint HTC One -Black
Source : Android Police