Update: This great deal is available again.

B&H Photo Video has Intel Core i7-6700K 4.0 GHz Quad-Core LGA 1151 Processor + MSI Z170A-G45 Gaming LGA 1151 ATX Motherboard for $459.99 - $40 Rebate = $419.99. Shipping is free.

Note, expected to ship within 7-10 business days.