Shell Shocker! Today only. Newegg has the Intel Core i5-8600K Coffee Lake 6-Core 3.6GHz Processor (BX80684I58600K) + ASUS Prime Z370-A LGA 1151 ATX Motherboard for 8th Gen Intel + Corsair Vengeance LPX 16GB (2 x 8GB) DDR4 3000MHz Desktop Memory (CMK16GX4M2B3000C15) Bundle for $510 - $10 CPU rebate [Exp 3/31] = $500 with free shipping.

On Amazon, the processor ($235), motherboard ($140) and memory ($205) would be around $580.