Here is a potential deal for 3TB disk
LOT OF 3 HP Enterprise 695996-002 3TB 7.2K SATA 3.5" HDD MB3000GCWLU HP 628182
LOT OF 3 HP Enterprise 695996-002 3TB 7.2K SATA 3.5" HDD MB3000GCWLU HP 628182 | eBay
Buy 3 lots of 3 disk per listing
$155 +$31 shipping = 186 /9 = $20.6 each before BO. Price could be lower
If you are lucky to have a 10% coupon, final price with BO and coupon , may be $17-$18 each.
I have 16 x 3TB coming tomorrow, $12 BO each shipped + 10% off .
I much prefer 4TB , but could not resisted $12 each 3TB drive.