I just bought a 2023 2500 HD LTZ. They started $8,185 under MSRP and we negotiated from there. It was by far the best deal I found in the area to include comparable trucks from Ram and Ford. Some dealers are still doing the $10k over MSRP for “market adjustment.” The truck I bought was on the lot and not a custom build. It is also on the complete other side of the country in comparison to the northeast. Maybe this wasn’t what you’re looking for, but there are discounts out there.