I was tired of people eating using up all my matter (and then they'd starve anyway). So I changed the food cost in the files.

To do this, go to the following file:

SpacebaseDF9/Data/Scripts/EnvObjects/EnvObjectData.lua

You can open the file in notepad.

Look for the block for FoodReplicator
Change nFoodPrice=50 to whatever value you would prefer.

In my case, I've changed the food price to 12, and will check how it goes! I haven't tried a zero food cost, as I'm not sure if the game can deal with it.

Incidentally, you can modify any other item costs/ values in the same file as you see fit. Hope you guys find it helpful :)