Kingston 4GB(2 x 2GB) SDRAM DDR2 667 (PC2 5300) Dual Memory $89.99

Newegg.com has a Kingston 4GB(2 x 2GB) 240-Pin DDR2 SDRAM DDR2 667 (PC2 5300) Dual Channel Kit Desktop Memory for $89.99 plus $4.99 Shipping.