Good afternoon,
Found an issue when using this mod alongside the Colony Builder mod.
The latter introduces a supply/demand mechanic, based around what I believe is item "prices" set by script-trade.lua within script_libs of the Colony Builder mod.
What I'm seeing when running Transport Drones is the item's prices dropping to practically zero for a significant number of items.
My best guess is that Transport Drones is somehow over-riding those values, but I couldn't begin to say how.
I've also posted to Colony Builder team so they are aware.