"

Unfortunately, there was a mistake in the creation of the VEGAS Pro 18 Steam launch offer for users in Argentina only. As a result, the offer was published locally with a wrong price of 20,10 ARS ($0.18) instead of 11,599 ARS ($279). 

We know that this led to some inconvenience on your end, which we deeply apologize for and ask you to request a refund from Steam directly. 

To be able to continue to offer you VEGAS Pro 18 at a good and fair price, VEGAS Pro 18 will be made available online again at a further 10% reduced price of $239 from next week. 

Thank you for your understanding and support."

On what legal grounds is this decision being done?

My purchase was done in good faith and MAGIX should honour the price and swallow their mistake, if this decision is final they will be definitely hearing from my lawyer who has already advised me and many other buyers.