There are two types of "airline pilots", in my opinion. Flyers, which love to fly, and money makers, who are in it for the $$. The latter of which are in the wrong place. No money here.
Flyers tend to come out of local FBOs.
Money makers tend to come out of high priced places. (UND, Gulfstream, ERAU, etc.) That has been my observation, whether quite limited or not.
Those I have talked to that go to the pilot mills say they "never had time" to go out and enjoys burning gas. They were too busy doing stalls or shooting approaches. The were sooo happy the day they flew their last single engine airplane. Not that there is anything wrong with that.
I trained at the local FBO, spent weekends "building time" going to pancake breakfasts(usually free for the pilot), etc. Did it cost me more? Not from what I have been able to figure so far from those I speak with.
Keep in mind, my observations are limited and somewhat overgeneralizing, and just that, my observations.