Yes, the Phalcon/Condor has been grounded for some years now. I believe the US Navy paid $15 million for the E-3D it recently bought from the MoD as a trainer, so imagine Chile's price would be in that ball park also. I doubt the Israelis (or anyone else) could offer a comparable capability for a similar price. Also worth noting that Chile already operates the KC/C-135 (albeit it with the older CFM56-2 engine), so support, training, operational synergies to be had.