Newegg offers this Western Digital 2TB Red NASware Serial ATA 6Gb/s 3.5" Internal Hard Drive 4-Pack, model no. WD20EFRX, for $299.99 with free shipping. That's $75 per unit and the lowest total price we could find for this quantity by $45. For further comparison, we saw a single unit for $80 in July.) Designed f(or NAS systems, each features a 64MB cache. Deal ends October 11.