Mediasonic HFR2-SU3S2 RAID 4-Bay USB 3.0 & eSATA Enclosure for $229.99 shipped. In addition, receive a 2TB hard drive as part of the bundle. Here is a screenshot for your reference. Mediasonic HFR2-SU3S2 PRORAID Box features 4 bays, USB 3.0 & eSATA connectivity, and on-board RAID controller with RAID 0/1/3/5/10 support. Getting the same bundle at most places would usually add up to about $319.