http://www.natureswaydelivery.com/index.php/tincture-cartridges
This site will overnight you thc cartridges so if you lived in cali and have a mmj card which is easy to get, should start reselling these for some profit. I would be heavily interested and i think others would to as true vaping is the future.
I think it would be a bad idea to have your supplier as a legit company unless you had things figured out with anonymity.