How much do I offer for a brand new 2017 Ram 2500 Diesel?

"Check engine for idle hours, not just the miles, the truck may have been abused in that manner. A pair of two year old batteries, that where not kept completely charged are probably in poor condition."
Worth a check just becasue, but there is about a .000001% chance that there's enough Idle hours on it to make any difference. He said its stuffed in the back of a new car lot. You think they filled it full of fuel multiple times and let it rack up 100s of hours idling?