(Disclosure, I may receive a small referral fee when you make a purchase through this links on this post.)
Sling TV is offering a free Fire TV Stick or Roku Streaming stick in return for 3 months of prepaid subscription. They are also offering 50% off for either Fire TV or Roku 3. This is a great deal considering a lot of people pay $60 for one month of their cable bill. Now, for $60 you get a streaming device which you can use for your Sling TV service and you get a Fire TV Stick or Roku streaming stick. If you are on the fence, this may be the deal which may push you over. However, this may also be a concern for some people as this may be an indicator that the service is not catching on and they are in need of a market injection to ramp up subscribers.