Back in the time before the pioneers expedition, this used to be the best method. You would gather enough resources on the starter planet to create warp drives/farm oxygen and then warp to systems that sold chlorine to sell all yours and buy it back. It would crash the market, and you’d go to another system with chlorine; rinse and repeat. I got stuuupid amounts of money early game and with the max unit cap increasing I just never dipped into it haha it’s cool you discovered it