I received this in a email. I did renew with this deal. I can not confirm if you start a new free 7 day trial and cancel right away you will get this email promo. There is a free 7 day trial so it might be worth a try.
A POWER GIFT: STARZ FOR $.50/MONTH UNTIL SEASON 5
Access all your favorite episodes of Power before season 5 returns. Enjoy a huge library of hit movies and Originals. All for just $0.50/month for the next 5 months.
Offer expires 12/31/2017. Offer available ONLY to former STARZ App subscribers. Subscriber will be charged $.50 per month for 5 consecutive billing cycles based on the anticipated premiere date of Season 5 of Power. Subscription automatically rolls to month-to-month at the then current price unless cancelled. Subscription is non-refundable. Service is only accessible in the U.S. and requires a high-speed broadband connection. STARZ and related service marks are the property of Starz Entertainment, LLC