There are good deals to be had because they aren’t selling well. Consumer reviews have been less than stellar. Do a search on Titan issues and you’ll find many complaints and issues. The biggest problem seems to be dealer lack of knowledge to fix the issues and mechanics who have no experience with diesels.
My coworker has one. Got a good deal as it was “new” old stock that the dealer was having difficulty selling. Its a daily in town driver that does no towing or heavy work so I can’t comment on that. He was stranded twice this past winter when it wouldn’t start in the cold. He can’t plug it in at work or in his parking garage. Dealer was no help.