Several years ago I purchased Slingbox and downloaded the Slingplayer apps to my cell phone and Ipad (and have continued to do so at no extra cost, with each successive replacement of both) and use it when I go to Walmart to get my tires rotated, the dealership to get my truck serviced, the restaurant to enjoy a good meal, international travel, etc., etc., and watch tv just as I would if I were sitting at home in front of my tv.
If I had to take a guess it would be that its service has since averaged to a few dollars a month and will continue to decrease with each passing month.