That inexpensive shrimp purchased instead of more realistically priced Gulf of Mexico shrimp is directly linked to human trafficking. As a rule of thumb, it is best to purchase goods originating closest to your home. It is best to support local farmers, fishermen, and manufacturing. Closest to home is best.
That inexpensive shrimp originating overseas - in particular from Thailand - is sent to market by men purchased to do the work. Yes, human slavery still exists around the world and this is an example of such abuse.
This is a video produced by The Guardian in which a reporter explains the process and the conditions of the transactions in this business. It is not easy to watch but it clearly explains the reality of the situation. Take a few minutes and watch it.
Closest to home is best.