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That price point is much higher than that of its competitors. Both Netflix and Hulu Plus subscriptions cost $7.99 per month, and Amazon Prime costs $99 per year, which equates to about $8.25 per month. That means HBO's streaming service could cost almost twice as much as its competitors - or $180 per year.
HBO CEO Richard Plepler made the announcement on Wednesday, saying that a "standalone, over the top" version of HBO is coming in 2015. The news comes just after Time Warner CEO Jeff Bewkes said that such a service was being seriously considered in September.
It's unclear if consumers will be willing to pay a $15 subscription, especially when there are other cheaper ways of getting that same content. Many HBO GO users share their passwords with each other so they can watch content without paying for a subscription, and it's also possible to stream many of these series for free online.