Amazon offers the Samsung 8GB PC3-12800 DDR3-1600 240-Pin Desktop Memory Kit
with two 4GB DIMMs, model no. MV-3V4G3D/US, for $35.99 with free shipping. (newegg
offers it for the same price.) That's $2 under our September mention and the lowest total price we've seen. (It's a current price low by $6.) This memory features 11-11-11-28 timings.
Update: It's on backorder at Amazon, but can still be purchased at this price
Update 2: As a reader found, coupon code "EMCJNHE45" cuts it to $30.59 at newegg; free shipping still applies.