Newegg offers the G.SKILL Sniper Low Voltage Series 8GB 240-Pin DDR3-1600 PC3-12800 Desktop Memory Kit with two 4GB DIMMs, model no. F3-12800CL9D-8GBSR, for $64.99. Coupon code "EMCWWHW48" cuts it to $57.99. With free shipping, that's the lowest total price we could find by $23. It features 9-9-9-24 timing.
Alternatively, if you haven't yet, use Newegg’s Android app and pay using Google Wallet to yield a final price of $49.99. (This discount can only be used once per account and does not stack with coupon codes.)