It's really unfortunate that some, if not most, automobile dealerships automatically default to applying an ADM to the MSRP of a vehicle nowadays. I have found that it happens to, not only, the high-end vehicles (Corvette C8's, Mustang GT500's, Jeep 392's, etc.), but also to everyday vehicles such as base model trucks and cars. I completely understand the law of supply and demand (post-grad MBA here), but it's simply about greed at this point. I consider myself extremely lucky that I was able to find my two vehicles at just under MSRP while they were in-transit (I did not pre-order them) to the dealership. I have a couple of good friends that have suffered a "dealer mark-up" after they had ordered their Jeep 392's and confirmed an initial price. In their cases they simply walked away from the deal, but were (and still are) extremely pissed that it happened. Primarily, because it took so long to get them in through the order process.
I apologize for the rant guys...just my $.02 cents.