Ok, Gasher, this has nothing to do with pricing, but yes, there are countries, where you cannot buy some games. JFYI I’ll explain to you an example how it’s handled in Germany atm.
There is a youth protection law in Germany which actually serves a good goal. It is there to keep porn, violence (at least the worse, unnecessary violence), booze, etc. away from children and youths (that is persons under 18 - there are exceptions for things like beer/wine, softporn and some bloody movies for over 16-year olds). So far so good.
A privately run company (USK) with representatives of the entertainment industry rates all movies, games and other entertainment media for their “compatability” for youths. This has nothing to do with the government. It is a self-sufficient system of the industry itself - but abiding to the youth protection law.
After the rating, a big coloured marker is pasted on the media to show parents and vendors at what age you are allowed to buy it (and it is illegal to sell to younger people).
A government office (BPjM) only kicks in by request of the youths department, if it is made aware of a piece of media which could be dangerous to the development of children. The BPjM employs professional testers of all ages, who give a recommendation for an age-classification of games or movies. Then the review is brought before a board of representative which decides, how the media is classified:
I) it is not dangerous to youths --> the USK-Rating stays in place, nothing changes
II) it is dangerous to youths --> it gets indexed, meaning it may not be sold to underaged people, there may be no advertising of this media, there may be no coverage in Magazines or other written/televised sources, it has to be sold “under the vendors desk” and only to adults, who have proven their age
III) it violates the constitution (mostly the case with cases of discrimination, racism, contradicts human dignity, glorifies violence/felonies or the display of symbols of the third reich, which are unconstitutional) --> the game/movie is
a) forbidden (may not be sold, imported in order to be sold, shared, etc. - you may however buy it overseas, if you only use it yourself)
b) seized (taken out of shelves, import stop and the posession ist prosecuted - I don’t know of any example, where this has happened before - one exception is the depiction of the third reich in movies, which is seen as historical correct art/games are not considered art - it would also be weird watching a wwII movie with black duck in a white circle on a red flag as a nazi symbol)
Needless to state, that the government does not itself censor the media. It only prosecutes those who don’t abide to the restrictions stated above.
CONCLUSION:
It are the companies, who either don’t sell their product in Germany, because there is no way they see any revenue coming back to them, as they’re not allowed to advertise, or if they want to sell it, they cut/change so much contents of the game, that it has a chance of staying in the shelves.
This leads to things like C&C having not soldiers but robots who don’t die crying out but rather sounding like a crumbled tin of coke and “bleeding” black oil. It leads to Black Ops not being allowed to be sold with the airport scene as it glorifies an inhumane act (you can’t even play a gifted uncut version, because it asks for an IP on start up/installation and closes connection for all german IPs).
It leads to steam not asking for ones age - I don’t mean the thingy, where you can put in anything you like, steam doesn’t ask you for ID - but rather leads to Valve truncating it’s game catalogue for everybody in Germany (and other countries respectively).
There is an initiative on the steam groups (for uncut) for a safe age-verification system in steam, so adults can buy uncut games. So far the widening of business possibilities doesn’t seem to be enough for Valve to implementing such a system - they would be the first and the business opportunity would be great if they could hold the monopoly for imported uncut games.
Edit: Now Valve seems to even want to restrict cross-border gifting, so that no one can play titles they’re not allowed to (and frankly the more obvious reason ist that they can’t juggle with exchange rates). This is very short sighted. As you are allowed to buy any game that ist not seized (and that rarely happens) when you’re 18, adult Germans are driven to either import the uncut retail version at ridiculous prices or go to a game shop and ask for the stash “under the vendors desk”. While steam is a very convenient way to buy games, not all retail versions use the steamworks system. So you’re practically driven underground because there is no way of age-verification on steam. Granted such a system is difficult to implement for all the different countries, the loss of costumers due to lack of service is something Valve cannot afford. And here I am, always thinking Germans don’t understand what costumer service means (here it means, “let the costumer care for himself”). Steam also wouldn’t have such a problem with the gifting scene, as its more comfortable to not ask somebody to gift a game to you (IMO steam gifts are always a good thing in terms of no delivery costs 
).
[/SIZE] tl;dr-Version[/SIZE]: youth protection sometimes over-achieves it’s goal when even adults aren’t able to consume media which could be dangerous for children.