Have been in contact with this guy. He seems like a straight- up kinda guy, asking for the delivery of a $40 laser and the last batch of vanguard test pellets. From Gearbox to Tucson.
I would say with the rapid responses, the amount of personal info disclosed, and his current employment at Vanguard, I would say this offer is reasonably safe.
Considering what he has to lose, verses what he is offering, I would say this should be a pretty safe deal for anyone who needs to get stuff to/from Tucson.