Corsair XMS2 4GB (2 x 2GB) PC2-8500 DDR2 Dual Channel Desktop Memory Kit for $29.99 after this $30 rebate. Here is a screenshot for your reference. Choose in-store pickup to save on shipping if you have a Fry’s near you. Otherwise, shipping starts at about $4.80 depending on your location. As a comparison, Amazon sells it for over $55 after a $20 rebate.