If the performance in the other thread for RT turns out to be true and consistent (30-60fps with RT enabled @ 1080p), then I'm not yet willing to pay such a high premium. I'm more interested in the AI improvements mentioned, and they'll have to do something pretty amazing with that to get me to fork out such a large sum of money. I mean I want to be able to talk to every NPC in-game and have them all pass the Turing test, and to fight as well as a skilled human opponent...
Meanwhile, for the price of upgrading my 1080ti to a 2080ti, I can upgrade my CPU, RAM, and Mobo and still have change left over.