For in-store pickup only with stock varying by ZIP code, Micro Center offers the Intel Skylake Core i5-6600K 3.5GHz Quad-Core LGA 1151 Processor, model no. BX80662I56600K, for $179.99. That's $30 under our September mention and the lowest price we've seen. (It's also a current low by $40.) It features a 6MB smart cache.