[EU] Selling Hearthstone BETA Key

[GigaBass]

Selling a BETA Hearthstone Key! Supposedly for EUROPE since I'm in Portugal!
I will be receiving a mail from a giveaway I won over the next day.

I've never done any sort of selling or buying like this. I want to know what ways I can possibly be scammed and how to prevent it?
I'm willing to give out my real facebook, my name, address, all that crap I could ever do to identify who I am, skype cam, don't know.
I just want the money, no use for the game!

From what I read in reddit the keys are not region locked, but I'm not sure on that, so I say it's an [EU] key.
Lowest I've seen around is 100€, so I'll do 80€!

[GigaBass]

I will only have the key TOMORROW or AFTER TOMORROW, not today! And the initial 20€ was a mistake!

[azera]

add me on skype mate i cant send you another message as your inbox is full my skype I.D is rob.mcshane

[GigaBass]

That exact ID doesn't appear anywhere:

rob.mcshane1 ?
rob.mcshane75?
robinson.mcshane?
Rob-pc?
robby.mcshane?

[Surehunter]

i pay 120 € when u go first ! dixor2k skype ! add fast

[GigaBass]

Key still not sold: you go first, or you pay an MM (prefered)

[Ralleballetoft]

Add pshero.wow on Skype and we could discuss further.

[GigaBass]

Still not sold