And through-shipping (gas-and-go, or carrying tankage for sequential jumps) doesn't waste quite as much time as the usual 14-day operations tempo. This can be a viable alternative to single-jump shipping.This data point was key in the design of my new J1 100DT freighter that can use collapsible fuel tanks for extra Jumps.
You'd still have to wait a week at intermediate stops if your passengers weren't also booked through to the destination; you want full staterooms. Not a problem with your all-freight mini-trader though!