Suppose that a manufacturer does receive reservations for only 80% (as an example) of the required minimum production run for a particular loco in a particular roadname. Some have suggested that the manufacturer should simply proceed with the production run regardless, presumably hoping that the extra unreserved models will ultimately find buyers.
What if the manufacturer were to raise the price of "under-reserved" models by the amount necessary to cover the cost of the minimum run? In the case of a specific loco model and roadname, where only 80% of the minimum run was pre-ordered, the price of each loco might be increased by up to 25%. The cost of the minimum order quantity is thus fully covered, so the manufacturer won't lose any money on any overage.
Given the choice between paying a premium for a relatively less popular combination of loco model and roadname and not having that model produced at all, which would you choose?