Steam - Arma 2 OA Help

Hey!
So I was recently using Steam and shizz and I came across Arma II. I realised that I wanted to play it legit and I'd like a new-fresh account.
However, when I tried to purchase the game, it denied my Paypal and I have no idea why.

So, would anybody be willing to gift me across a copy and I'd pay?
I'll be up for paying half before and half after.

If you're interested, please add me on Skype;

andrewdotatcom

Thanks