Cheap for a component, maybe. But these aren't off-the-shelf solutions. They're components that need to be integrated into other hardware, and then someone would have to write software to do what you suggest.
Oh yeah, I'm not expecting it to work off the shelf!
As far as I'm aware the IMU needs an Arduino UNO board, but need the Amtel Studio for the programming side of it.
So I'll have to learn another kind of programming!
The only other option comes out at £800, and that would work off the shelf, but a little pricy.