Newegg has some decent deals today in its PC DIY section. The Intel Core i7-7700K is down to $320.

However, a quick check using the Hover Hound extension (it looks up products for price compare on Amazon while shopping at Newegg) shows the CPU to be at $307 on Amazon. YMMV.

Source: [H]ardOCP – Newegg PC DIY Done Right Sale