I think that depends on what you want out of your carpc. For me, its being able to have it as a completly independant integrated system... no needing to get in the car, start a phone app, plug it in, and deal with all that. I just hop in my car and go. Well worth the 30 or so. But then that's just my opinion, I don't like the idea of my carpc depending on external hardware to operate.