I would think that with the low overhead oems have, theyd be hard pressed to spend money on already binned cpus, especially when theyre stamped, and someone gets a wrong binned cpu of lower quality (stamped) and is said to be of higher quality, and sold as such
well I don't know about open box. I would find it quite illegal to sell a CPU that is 2nd rate to what someone would be buying as retai. One thing I know for sure it to buy retail CPU's, video card and boards. When it comes to HDD's and burners I've always bought OEM and never had an issue. I find it funny how tiger always seem to be more than newegg. Though I never bought from them.