Your vehicle numbers are way off.
A 2017 Ram 1500 base truck is about $26,500 MSRP, which probably means it can be had for $25,000 at the dealer if buying off the lot. If you want the base as a 4x4 it's about $31,500 MSRP, which can probably still be had for under $30,000 out the door.
A Ram Promaster 1500 (based on the large Fiat van chassis) is around $30,000 MSRP. The 2500 model is $33,000 MSRP and the 3500 is about $36,000 MSRP, all as cargo configurations. The passenger variants, only availabe as a 2500 chassis and a 3500 chassis are $34,500 MSRP and $38,500 MSRP respectively, and given that there are a lot more parts on the passenger versions this $1500-$2500 markup isn't unreasonable.
Now, if you want the Laramie package, or you want all leather, or you want the megacab with the 8' bed and the Longhorn custom interior with the Katzin seats, yeah, you're going to be spending quite a bit more. Thing is, you don't really need that stuff. You might need a stronger engine in the base model truck, but those modern V6 engines that all three domestic automakers use are quite good, better than their entry-level V8s were only a generation ago. You probably don't need that upgraded configuration.
If your numbers are coming in $60,000 for a cargo van and $45,000 for a pickup truck, it's because of standards that you set.