Patriot Signature 8GB (2x 4GB) PC3-12800 DDR3 Desktop Memory for $64.99 shipped.  Here is a screenshot for your reference.  Alternatively, it is available at Amazon for $67.67 shipped.  It features aluminum heat spreaders, 9-9-9-24 timing, and is XMP-ready, and RoHS compliant.  Most places have this memory kit for about $79 or more.