This is a good thought, but, if we all knew this cost then how would the dealerships make any money? Toyota and the like keep this info on lockdown for sure.
This will show you retail, invoice, actual dealer cost and average of what people are paying. Don't forget to plug in your options and packages.
Dealer cost takes into account factory to dealer incentives and holdback. Holdback is a dealer cash flow supplement from the manufacturer that is usually a percentage of the MSRP. This usually helps covers financing, marketing, upkeep until the car is sold. There is often a further incentive to move the cars quickly (like within 60 days). If you order your truck to be built, the dealer will actually make more money on it, as it doesn't have to sit in inventory.