Optus has started selling the HTC One S and One V. HTC One S is available for $11 per month handset repayments on $30 per month contract for two-years or for free starting from $50 per month for two-years. HTC One V is available for free on all two-years contracts starting from $30 per month.
Both the HTC One series phones are available for purchase online on Optus website. You may hit the source links to see more details.
HTC One S is also available on Virgin Mobile for free on $39 per month for two-years. So, if you are thinking of buying HTC One S you have an option to choose from Optus and Virgin Mobile.