A truck is only slightly more expensive to produce than a sedan when all costs are taken into account, but can be sold at a higher price.

The main difference between a truck and a sedan is a few hundred pounds of metal. Both have the same cost in labour to manufacture, as well as equivalent R&D cost. In some cases, trucks have lower R&D because they aren’t expected to change as much from year to year, so the engineering cost of re-designing parts/panels/etc. just isn’t there.