Yes, that's retail. It was originally $90, but I have a $5 off coupon (for my use only for an issue about an order...there's no code out there so don't any get excited...hehehe).
I've heard of similar deals on e4300's (& possibly 4400's?) and "pre-owned" e6300's. I realize there's a difference in the L2 cache, but i've also heard that if one gets a (nearly) 100% overclock on these, the difference in cache will be negligible. Is that true?