As a rule, I never buy games on release. From everything I hear, you pay twice the price to get an unfinished game in most cases.
I put them on my wishlist, keep an eye on the reviews and depending on those I decide how much of a discount it will require for me to actually buy the game. Usually I end up getting them at least a year later and/or at least at 50% off.
We have pickled herring as well but this one's raw.