Newegg via eBay offers the G.Skill Ripjaws X Series 16GB PC3-12800 DDR3-1600 240-Pin Desktop Memory Kit with two 8GB DIMMs, model no. F3-12800CL10D-16GBXL, for $53.99 with free shipping. That's $11 under our December mention and the lowest total price we've seen. (It's the best now by $12.) It features 10-10-10-30 timings.