Newegg offers the Crucial 16GB PC3-12800 DDR3-1600 240-Pin ECC UDIMM Server Memory Kit with two 8GB DIMMs, model no. CT2KIT102472BD160B, for $99.99 with free shipping. (Amazon has it for the same.) That's tied with our January mention as the lowest total price we've seen. (It's also a best by $5, excluding other Amazon vendors.)