It's simply unbelievable these days. After there was an AMD Radeon HD 7990 Malta as well as an NVIDIA GTX 780M on eBay before those products have actually been launched, there is now a retail version of Intel's upcoming Core i7-4770K on eBay too.
Taking a closer look at the offer on eBay shows, that the seller wants 600 US-Dollar for this CPU if somebody wants to buy it immerdiately. According to latest rumors, Haswell CPUs should feature the same pricing like Ivy Bridge processors. In this case, 600 US-Dollar is almost twice, what this 4770K CPU will be worth. It most likely looks like the seller just wants to get some money from fools.
Additionally you find a complete specs sheet, where you can find all the product details except the release date. Of course it's arguable if those details are correct or not, but given the fact, that it obviously a retails product, which is being sold, the seller might actually have the correct data at hand.