For its newsletter subscribers only, newegg offers the Western Digital Caviar Black 1TB Serial ATA 3Gb/s 3.5" Internal Hard Drive, model no. WD1001FALS, for $84.99. Coupon code "EMCKDKH26" cuts it to $79.99. With free shipping, it's $0.08/GB and outside of the mention below, that's the lowest total price we could find by $5. (However, we saw it for $8 less last summer.) It runs at 7200 rpm and features a 32MB cache. Coupon expires June 8.

A close price: ServerSupply sells it for $80 with free shipping.