HBO Max is cutting the cost of its subscription service in half for some customers starting Friday in a deal will run through September 26.

Prospective customers either can sign up at the HBO Max website or through certain distribution partners: Apple, Google, LG, Microsoft, or Sony. Users also can sign up via their Roku device or Vizio SmartCast TV.

The promotion does not extend to other streaming partners like YouTube TV or Hulu.

The departure will result in many users canceling subscriptions, with some experts speculating around 5 million users will leave. The price cut is HBO trying to recuperate its losses from the fallout.

After the six month trial ends, new HBO Max users will have to pay the full $15 monthly subscription cost. The service is currently one of the most expensive on the market, even with the ad-supported $10 subscription.

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