keep looking at RamTrucks website. Ensure the package selected is the “built to serve.” That’s how i found the dealer. Sometimes when it says “in transit,” it takes a few days to populate but it could be on the lot. I understand the pain of finding it and immediately it goes to sold. RamTrucks usually updates every few days from what I’ve gathered.
I can confirm that the Ram Website's "Search Inventory" is updated every night as far as updating inventory. As for the time it takes to update a particular truck from "In Transit" to "On Dealer Lot" or how quickly it's removed after being sold, I'm not sure. But they do add and removed inventory once every day.