Newegg offers the Seagate 6TB Serial ATA 6Gb/s 3.5" Internal Hard Drive, model no. STBD6000100, for $299.99. Coupon code "EMCPBPE99" cuts it to $279.99. With free shipping, that's tied with our June mention and the lowest total price we've seen for any 6TB internal drive. (It's a current low by $20.) It features a 128MB cache and runs at 5900 rpm.