Newegg offers the G.Skill Ripjaws Series 16GB PC3-12800 DDR3-1600 204-Pin Dual-Channel Laptop Memory Kit with two 8GB DIMMs, model no. F3-1600C9D-16GRSL, for $56.99 with free shipping. That's $18 under our mention from last August and the lowest total price we've seen. (It's a current low by $8.) It features 9-9-9-28 timings.