Statistically...
Statistically, 300 fake items out of their massive number of orders isn't that bad. Now, I'll admit, if it was I that received it, I would not be a happy camper. Still, I favor Newegg due to their actions when an order went horribly wrong:
In 2005, I had several orders shipped to my doorstep from Newegg. The FedEx agent decided to leave them without signature. Upon my arrival home, the boxes were gone. After pulling my hair out with FedEx, I called Newegg. They were easy to deal with and re-shipped all items that were currently in-stock, overnight, at no charge. Any items that were not in-stock were refunded, including the shipping charges.
I am disappointed the i7 snafu occurred. If my previous experience is any indication, all customers involved will have their CPUs replaced in a timely manner.
I have to agree with Jason, above, it's less about IF a mistake occurs, but how the company deals with it that can make or break their reputation.
Biting the hand that feeds IT
