Amazon offers the Seagate 4TB Serial ATA 6Gb/s 3.5" Solid State Hybrid Hard Drive with 8GB SSD, model no. ST4000DX001, for $129.99 with free shipping. That's $10 under our mention from three weeks ago, the lowest total price we could find by $23, and the best deal we've seen. It features a 64MB cache. Deal ends today.