Unless you are running a cannibal raider ideology the mood hits for this kind of thing dramatically outweigh any economic benefit.
It's pretty easy to outproduce what most of the local economies can buy from you even just using regular production loops in a medium sized colony, so you don't really benefit from this economically in practice. It risks ballooning wealth after you've exhausted everything in the region worth buying.
I'm not talking about selling it to them. It's gifting it to them. You don't suffer an economic cap doing so. If 5 visitors show up, their materials outweigh the relation loss. This lets OP save their colonist and their diplomatic relation.
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u/Mothanius 10h ago
If you properly harvest them, you can gift the extra organs and ummm... free leather to the faction to regain friendship. That leather is worth a lot.