It won't let you finish buying the game at all if your ?cc=xx doesn't match the location you've set up your Steam account with.

Should you be disappointed. In fact, it costs 299 roubles ~ $9 :D
http://imglink.ru/show-image.php?id=2ab9a46d08c29e067a6681e5bc01354e - print screen

Okays, using my UK friend's account, can i get him to add funds using my credit card with my billing address?

You can't buy games from outside your country as Steam checks your IP. if it matches the storefront then the transaction will go through....or there are simple restrictions like buying using a credit card that muct have a billing address in a specific country (most likely impossible to buy a game in Russia with a card that has a billing address in United Kingdom)

Guys, I got very important question and need fast answers.

What if sb bought VPN in Russia and he sales games. He pays via WebMoney, his account is for Russian personal data.

What's the chances of banning him? If it will happen, will the games that he bought also get banned? He has there now 0 activated games, but he will add some, just to authenticate account in some way.

Just for your information:
Who want to buy games from the cheapest region (ru / uk / de / fr) can add me in Steam. I will accept Paypal.

Procedure:

1. I tell you the price for the game you want.

2. I will get the game into my inventory.

3. I start a trade with you and show you that I bought the game for you.

4. You send me money via Paypal

5. I finish the trade and you have your game:)

I already send over 1000 gifts in my lifetime like this. The main reason, why I started this, is because everything is censored here in Germany. If you are interested just add me in Steam.

Close it already.