The launch price of electronics is almost always inflated.
December 2014 sales will probably see it drop to a more reasonable price.
For a semi-serious, semi-casual gamer like myself, there's enough still to come on my XB360 for me to be able to wait til the price of a next-gen console is reasonable.
Actually, I was thinking of waiting til the PS4 launches to be my opportunity to get a PS3 for dirt cheap and play the long list of exclusives I've got saved in an Outlook note file