Oh, and this just in (snicker snicker).
The increase in minable commodity prices has had an unexpectedly large effect on delivery missions due to compounding multipliers, allowing large numbers of credits to be earned with minimal risk and effort. To re-focus the earnings on the effort made, the rewards for these have been changed so that the distance travelled and quantity transported has a larger effect on the pay. Payouts remain relatively high and will be monitored for any further necessary adjustments.