Originally Posted by
pokiame
it is probably hard to argue that it is a good value (I think unless it helps you make a connection you might otherwise miss).
If you might miss your connection that means you've had a schedule change that has put you below MCT, and if your flight is far enough in the future that you can order this service (it requires 36 hours advance purchase IIRC) then you almost certainly have rerouting options that are free.
this service is explicitly NOT designed to help you make otherwise unmakable connections.