http://www.newegg.com/Product/Product.a ... 6820231314
Newegg has G.Skill Ripjaws F3-12800CL9D-8GBRL on sale for $75 with free shipping. Toss in the 15% off desktop memory customer appreciation coupon that they just e-mailed me this afternoon, and the price came down to $63.74 for this 2x4 GiB kit of DDR3-1600 memory.
Update:
This same memory is $70 -10 code "EMCKCJH23" with free shipping today.