Fry's Electronics offers the Corsair XMS 8GB PC3-12800 DDR3-1600 240-Pin Desktop Memory Kit with two 4GB DIMMs, model no. CMX8GX3M2A1600C9, for $47.99. This $20 mail-in rebate drops it to $27.99. Shipping adds about $5, or choose in-store pickup. Even with shipping, that's the lowest total price we could find by $17, although it was $10 less a month ago (since expired). It's also the second best price we've seen for 8GB of PC3-12800 RAM. Sales tax is added where applicable. This dual channel RAM features 9-9-9-24 timings. Rebate ends April 5.