I personaly dont understand, why u all look for "carrier" phones with monthly payment...
Isnt there any "local" internet shops (similar to ebay/amazon) where you can buy? Here there is planty of them! Choose the one u like or the price u like and go ahead!
You can see some of search results here "http://www.salidzini.lv/search.php?q=htc+one" But ofc, these shops dont send outside Latvia, so its not option for thread author
HTC One S Black