I'm confused. What is proprietary about composite signal that any TV can handle? All you need is an adapter that plugs into the bottom of the IPT. I'm sure they'll be all over ebay very soon.
When I wanted to hack my samsung phone, I could have bought the USB cable for a bagillion dollars from samsung. But people were selling them on ebay. So I got one. $12 shipped and arrived in 5 days.
I agree that $50 is wrong to charge for such an item. It's a few feet of copper and plastic for god's sake.
It's actually the cable and power brick they're selling for $50. The power bricks usually went for $30-$40 so $50 is actually a fair price. What ISN'T fair is that you don't have the option to just buy the cable.