Seems like a decent deal. These are $184 at newegg.
WD BLK 4TB 7.2K SATA 6G 3.5IN 128MB - WD4004FZWX-BSTK - Z - CDW Internal Use/Service Pts - CDW.com
WD BLK 4TB 7.2K SATA 6G 3.5IN 128MB - WD4004FZWX-BSTK - Z - CDW Internal Use/Service Pts - CDW.com