apehater: its not important how and i don't intend to post manuals for new scammers. just remember what i posted, in case you get a strange offer
JunglePredator: Can you PM how it happens please?
Having worked in retail & the like I find it interesting how they work but lack the ability to dream up stuff like that myself... My trainer would have actually had to deal with more security issues if he hadn't taken the time to explain some of the retail scams. (Kind nice... the store I worked for had a REAL security guard... certified allowed to arrest people legally... not like the walmart greeters.)
Here's how it happens...it's called the bait and switch. So you buy keys for him. He then comes back and insists you send him the games first for whatever reason. Now, since you already invested money into games you probably aren't all that interested in, you are more inclined to trust him, lest you get stuck with these keys you don't really want.
It doesn't matter what store you buy the keys from, what matters is the scammer never intends to send you the keys he promised in the first place. This is obscured by all the "details".
The short story is that as soon as you spend money on it, you get "hooked" by the scam. Same thing the Nigerian scams do. Once you spent some of your money, you become more likely to waste more good money after bad...