Used underhanded marketing to sell you things you didn't want to make it look like a sale. Should have never went on sale, or pretended to. I don't think the game costs 80$.

EDIT: Let me clear up some information that people seem to be misinformed about. This was posted when R* was doing their shady steam sale promotion. At the beginning you couldn't buy GTA V alone, at it's regular price of $59.99. You could buy it at the same price but with it's in game money card. Which was the only way to buy it, unless you wanted GTA San Andreas or Max Payne. So if someone posts in the comments about me being wrong about it being $80 then they should go do some Googling about what happened. If they hadn't put it on sale GTA V could only be bought at $84.99, so it was a fake sale.