Perhaps the best way to prevent getting ripped off in business is to not try to get rich quickly.

VOA: special.2010.05.16

"When the skipper on the Ady Gil saw the Shonan Maru moving in to strike him, he put his engines in reverse to get out of the way, which probably saved some of his crew but it ripped the front end of the vessel off and caused catastrophic damage to the Ady Gil,"

VOA: standard.2010.01.06