G.SKILL Ripjaws Series 8GB (2 x 4GB) SDRAM DDR3 1333 (PC3 10666) Memory $24.99

Newegg.com has a G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Desktop Memory Model F3-10666CL9D-8GBRL for $24.99 with Free Shipping.