OWC 16.0GB (2 x 8GB) PC3-10600 DDR3 ECC-R 1333MHz... at MacSales.com
OWC Memory
6GB Memory for 2007-2008 MacBook Pro, MacBook, and iMac
OWC Mercury Extreme Pro 6G SSD + RAM Mac Mini refurbish
OWC 8GB PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Module Upgrade Compatible with iMac, Mac Mini, and MacBook Pro (OWC1600DDR3S8GB) at Amazon.com
OWC Mac 2GB 800Mhz DDR2 SODIMM Memory – QWERTY Computers
16GB Memory Upgrade for MacBook Pro, iMac, and Mac mini