Every Mars plan is, underneath, a freight quote. And freight is priced by the kilo. Here is what a kilogram has cost, what it costs now, and what has to be true before Mars cargo is a business instead of a budget line. Ask a shipping company what anything costs and the answer starts with weight. Mars is no different — it is just the longest route in the business, and for most of history the rate card was absurd. The curve: sixty-five years of falling freight A 2026 Cambridge