I installed a SlingBox Pro HD last week. Works great, as advertised. Access it from all our PCs. I thought, what the heck, let's check it out for Android, only to find a $29.99 price tag. Are you kidding, no way! Seems the same for Android tablets.
As a cheesy workaround, I launched my home browser from my phone using SplashTop remote client, and executed the SlingBox app from there.
Guess I'll keep an eye open for a deal I can't refuse. Meanwhile, the work-around and my free Netflix client will be fine ;-)