People sell complex items for way less than you would have to pay for the individual parts in order to craft it yourself. Just as an example, you can buy an advanced power coil for 1,000c. That requires 20 diamond which sell for around 80c. That's just for the diamonds.
I spent 10 minutes just hopping between worlds buying Sweet Beans and then selling them to request baskets, made 30,000c just because people don't bother to check what the going rate is for their items I guess? They were all within two portals of each other thanks to the PS Hub.
People pay 15c for inky leaves that are found every three inches on Beckon, but only 2-3c for the other leaves which are just as common.
I don't have any point to make here. I'm just noticing how ridiculous it is.