All disk listed have healthy SMART and are tested bad sectors free with WD's Data Lifeguard Diagnostics.
Test report is available upon request.
$150 for all.

2.5"
1TB WD Blue - $40
500GB Hitachi 7200rpm - $35
320GB WD Blue - $30
250GB Seagate 5400.4 -$25
160GB Hitachi, WDx2 - $20

3.5"
250GB Seagate 7200.10 - $30

PM or post here if you're interested or have any queries.