Newegg.com has select Corsair Gaming K70 LUX Red LED Mechanical Keyboards listed below for $99.99. Shipping is free (and fast, if you have ShopRunner).

Cherry MX Blue Switches [newegg.com]
Cherry MX Brown Switches [newegg.com]
Cherry MX Red Switches [newegg.com]

Looks like this is on-par with the lowest price that it's ever been on Amazon, and on-par with previous frontpage deals...hope this helps!