This addition is an afterthought on my part.
Just in case some participants have a wildy differing opinion of what a 'commodity' is.
The following from some place on the internet:
DICTIONARY
commodity
Definition
com·mod·i·ty[ k? módd?tee ]com·mod·i·ties Plural
COMMODITY
1. traded item: an item that is bought and sold, especially an unprocessed material
2. useful thing: something that people value or find useful
Good manners
Common Sense