What do you mean there is no legal point? This whole issue is a massive breach of Business Ethics, not providing a clear cut information on their main retail site for different version is not complying with Business to Customer Honesty Policies, sure it could've been a lapse in judgement forgetting to put such information on the product page but that is still corporate misconduct by the seller, you can have hundreds of blog sites and news informing potential customers of the censorship but ultimately if your product page doesn't give any indication of the difference then that counts as customer misinformation.
Secondly where did you get that universal idea that each individual NZ game distributor must obtain copies of games from Aus? NZ gaming laws have nothing to do with its Australian neighbours, we allow R18 games to be sold legally no problems whatsoever, and each individual distributor is supplied from where ever is cheapest for them (in most cases Australia for non R18 games) including Asia, Europe and America.
In fact my copy of Halo:Reach bought from a local retailer is from China, non bootlegged legitimate copy.
First of all we are talking about Witcher 2, not Halo or any other game. Each country has one or two particular companies controlling the gaming incoming product management. If they decide, AU version of a game, then it's AU version no matter what you do.
Second of all i'm sorry if i sounded too harsh on you, it wasn't intended, i'm only saying my opinion.
Third of all, how LEGITIMATE is it for a distributer to go like "You are about to checkout the AU version of the game which is cencored!" . Also, how LEGITIMATE is it for a distributer again to go like "We have a window for you, just change the region you've selected and you will get the uncencored worldwide version!".