I am currently in a fairly extensive exploration expedition and get to sell my bio data whenever I get within 1000 ly of a carier. (1000 is the magic number for me)
This time I had for 4 billions worth (incl bonus). I haven't sold any cartographic data yet as I'm saving it for someone who mayne can use it for bgs when I get back
"Jesus... What are they feeding them?"
"DBX? reprocessed biowaste. They're deep space explorers, and you don't see a greenhouse on that thing, do you?"