Salem

...i was waiting for more things to come to the store and just wanted to buy few Mystery packs when i saw that only payment option is paypal wich i cant make account for in Serbia atm.

Can you guys add Skrill as payment option ? :]

Or you can just send me 1 of those Red Crowns in game that will work also

You could send me a western union of 100 rubees and I shall buy you that mystery box.

I'm not sure if I can point at a rule and say "this isn't allowed", but let's say "don't do this" on the basis that you're two strangers on the internet and it's pretty easy to get scammed with these sorts of transactions. If you guys want to make arrangements like this outside of the forums, then it's on each other and Paradox and Seatribe aren't involved.