411 REFERENCE · Wikibooks
No Man's Sky/Money-making/Smuggled contraband
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
This is a fast way to get very large amounts of units. However, it makes you more likely to be attacked in space by sentinels and non-pirates.
The concept is simple: go to pirate-controlled systems, land on the space station, and buy the illegal contraband. Then warp to another system and sell them for a large profit nearing fifty-thousand to a hundred-thousand or more per item.
Tips
Try getting the cargo scan deflector starship upgrade. It unlocks the ability to block ship scans. Find the button in the quick menu, under "utilities". You can buy blueprints at the Anomaly.