I believe mine cost something like $15,000 but mine was dragged out longer than it should’ve been because I had some problems with my name on my license and had to go get that fixed in the middle of my training and I didn’t stop flying during that period so could’ve been cheaper for sure. I cut a deal with my parents so they actually paid for mine thankfully. I would definitely recommend doing it though because it will really show you if that’s what you want to do or not and it would cost the same if not more @ATP In most cases. My instructor was also an ATP grad and once I told him my plans he did my training as though I was at ATP with ATP checklist’s/procedures and everything so really cool guy.