I also think the price is ridiculous, but it's ridiculously cheap. You play most of these games for 40-60 hours, that's approaching $1 per hour of entertainment. Almost nothing except books approach that, and those are usually written by 1-3 people at most, AAA games take orders of magnitude more people than that working on them over a period of years.
I think $60 is a steal for a good well-produced game compared to other forms of entertainment with which they're competing, and clearly the market agrees since consumers are buying them in droves.
I realise, of course, that it was released on other platforms before then. But it seems a little odd to pick on a two month old release. (Actually not quite two months, now that I check)