Seagate
Backup Plus Slim 

1 TB Red USB3,sku-5211521
2TB Silver USB3, sku-5193588+90

 $136.59

$200.53

 $97.00

$160.00

Western Digital (red) 

1 TB SATA3 3.5 TB 64 MB SATA 5400RPM Desktop Bare Drive 64mb Cache,sku-WD20ERX

$125.00

$110.00

WD (purple)

 AV 3.5 2TB 64MB SATA 6gb/s Hard Drive

$126.66

 $111.00

WD(Red)

3TB, SATA3, 3.5 inch 5400RPM Desktop Bare Drive 64mb Cache

 $205.33

 $181.76

Samsung 

SSD MZ-7KE256BW 850 PRO series 256gb 2.5 inch SATAIII Internal Center SSD Bare sku-MZ-7KE256BW

 $272.50

 $256.00