Tizzysawr: That actually depends. There are also laws that allow retailers, particularly online ones, to cancel purchases made when prices had errors. Amazon, for example, put up a $2000 tv on sale for like $100 a few years ago by mistake. A bunch of people placed orders that, naturally, weren't ever fulfilled.
Then again, I believe Amazon cancelled the orders before they were charged. No idea what happens once the customer has been charged, though Amazon did honor an error price with some CDs a few months ago when I got like 25 CDs for $30. They cancelled the orders that hadn't yet been charged, but the ones they had charged me for they sent to me. So it depends, I guess.
Well there's a problem with digital sales like these. They sell codes. Codes that are given to you immediately after purchase. So if they screw up, they can't revoke your code. :p
Also: No Origin sale in Mexico either. This must be like that time when Spanish speaking countries got a sale that nobody else got.