Double Venom, there will always be some level of risk with internet purchases.
To outright conclude its a scam on what has been described above would be hasty.
It makes sense to me that an
OIL RIG worker might want and appreciate a PRICEY tool set
Honest people on evil-bay get scammed all the time hence the opportunity to post negative feedback.
On the other side of the coin he is seemingly risking more by forwarding money to you prior to (seeing and/or) collecting the item. The question he would be asking himself is - "Is the vendor legitimate?"
Somewhere, someone has to eventually bite the bullet and take some risk if such a deals are to proceed. What jhv48 and Tony R have suggested puts the majority of the risk on him, and will protect you to some extent.
Good luck