Out of curiosity why DDR 2133? You can get 1866, 1333 or 1600 cheaper and local. You can pickup an 8GB kit of kingston hyper x for $54.99 or even 16GB of corsair xms3 ddr3-1600 for $79.99
http://www.microcenter.com/product/354611/Vengeance_Series_8GB_DDR3-1600_(PC3-12800)_CL9_Dual_Channel_Desktop_Memory_Kit_(Two_4GB_Memory_Modules) - $46.99
Oh, you're in Lima.. Still, can find the same deals on newegg.