ASUS RT-AC66U B1 AC1750 WiFi Router - $69.99 AR @ Newegg
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The ASUS RT-AC66U B1 Dual-Band 3x3 AC1750 WiFi 4-Port Gigabit Router is $69.99 after coupon code EMCBBCD234 and a $10 mail in rebate.
Matches the lowest total price seen from Frys & Newegg previously, and currently there's an AMEX offer for either 1K membership rewards points or $10 off after $75 spend @ Newegg (YMMV), reducing the total price further.